The episode opens to under the water. The camera pans upward to sea level, and higher up into the city. The scene changes to where Katara is set to spar with a young boy named Sangok. She eyes her opponent with a look of determination. Sangok looks at her with a frightened expression on his face, shaking slightly. He summons a globule of water, freezes it into an iceball, and fires it at her. Katara, however, is quick to melt the iceball and, turning around swiftly, bends a wave of water at him, which she proceeds to freeze, thus suspending Sangok in an icy trap.

"Nice try, Pupil Sangok." Pakku speaks watching Sangok trying to break free. "A couple of more years and you might be ready to fight a sea sponge." He unfreezes the ice; Sangok falls to the ground dazed. "Would anyone care for a rematch with Katara?"

Several students sits by the sidelines, all of them to be tired and unamused.

"Katara, you've advanced more quickly than any student I've ever trained." Katara smiles brightly. "You have proven that with fierce determination, passion and hard work, you can accomplish anything." Pakku turns to Aang irritably. "Raw talent alone is not enough." Aang is lying on the ground with a lazy smile, floating Momo around on an airball above him. "Pupil Aang!"

Aang stops bending at the sound of his name; Momo lands on his head. "Yes, Master Pakku?"

Pakku speaks sarcastically. "Care to step into the sparring circle? I figure since you've found time to play with house pets, you must have already mastered waterbending."

Aang jumps off the ground with airbending. "I wouldn't say mastered, but check this out."

He twists around, bending some snow around him to make a snowman of himself, which Momo knocks over. Cut to Pakku and Katara who wear similar expressions of disdain. Pakku shakes his head in disappointment, while Katara looks on in irritation. The scene changes to another part of the city where Sokka and Yue are taking a walk along a bridge. Sokka is walking along the top of bridge's wall while balancing.

"So they don't have palaces in the Southern Tribe?" Yue asks.

Sokka sits down on the ledge. "Are you kidding? I grew up in a block of ice. It's not exactly a cultural hub."

Yue laughs and places her hand on Sokka's shoulder; when Sokka smiles at her, she gets a little upset and looks at him seriously. "Sokka, this is wrong."

"What's wrong? We're taking a walk!"

"I'm engaged. It just feels..." Yue looks to the side.

Sokka takes a breath in, getting an idea. "I know what you need." He hops off the rail to stand by her side. "You need to meet my good friend, Appa."

"Who?"

The scene changes to where the two approach the stables, where Appa is resting and Tai is shoveling the giant bisons poop dumping it into the ocean.

Sokka opens his arms out in enthusiasm. "Appa and I go way back, don't we, boy?" The thunder of Appa's shifting bulk is heard and Sokka's features turn to surprise. Appa enters from the left and lands on top of him and licks him, much to Sokka's dismay. "Ah, ah, easy! Down boy! Agh! No, up!"

"Looks like you haven't been giving Appa enough attention!"

Yue laughs. Tai smiles at them before rolling his eyes placing down the shovel, he walks away towards a bathroom. Sokka attempts to pull himself free of Appa, who continues to lick his face. The scene changes to the pair of Sokka and Yue sitting on Appa's saddle, Sokka holding the reins in his hand.

Yue smiles, excitedly. "So, how does this work?"

"You holding on tight?" Sokka asks. Yue nods; in a cool tone. "Yip..." Sokka pauses glances to Yue, and grins. "...yip."

The camera zooms out to a shot of the entire city as Appa takes off, blasting snow all over Tai who frowns underneath the snow.

"Oh ... my ... goodness!" Yue shouts as Appa is soaring over the ocean; Yue is looking over the saddle. "Wow, I can't believe you do this every day."

Sokka stretches. "Yeah, we pretty much live up here."

"Is it always this cold in the sky?" Yue asks moving closer to Sokka.

Sokka smiles happily. "Not when you're with someone."

Yue turns to face Sokka, blushing. "It's beautiful up here."

"Yeah..." The two turn to each other and slowly begin to lean in, but at the very last moment, Sokka widens his eyes, turns away and pretends to act cool again. "Woo, yeah! Ahhh, good times, good times." Snow and black soot start to fall from the sky. "Hey, look!"

Yue glances around at the gray snow, Appa flies through the gray snowfall; worried. "What's happening?"

"Oh no..."

The scene cuts to where civilians have stopped to observe the sooty snow. Cuts to Aang, who laughs as he gleefully rolls around in the snow in a circular pattern. Cuts to Momo, who opens his mouth and catches a sooty snowflake only to bristle and spit out the contents. Aang stops playing around and looks up at the snowfall with a concerned face. Cuts to civilians standing near a fountain. Camera pans down to show the fountain's water turning black. Then the camera cuts to Tai with concerned eyes as he watches Sokka pick some of the "black snow" up from the ground.

Sokka picks up handful of black snow. "Soot."

"What?" Yue asks.

Sokka, Yue, and Appa landed right outside the outskirts of Agna Qel'a, near the shores of the North Pole seas where Tai stands having packed everything up. Sokka is kneeling down, observing the snow.

"I've seen this before, right before my village was attacked. It's soot mixed with snow." Sokka rises.

"But, why?"

Tai takes a moment to think before looking out over the horizon. "Shit. Most likely it's the Fire Nation." Tai looks at Yue and Sokka concerned. "They've closed in on the North Pole and from the looks of this stuff, [Camera zooms out to show the enormity of the sooty snowfall.] I'd say there's a lot of them."

Sokka nods. "Maybe a whole fleet."

"Aye."

Cuts to the lead ship sailing toward the Water Tribe, under the command of Admiral Zhao and Iroh.

"This will truly be one for the history books, General Iroh."  Zhao and Iroh stand on deck. "Just think, centuries from now, people will study the great Admiral Zhao, who destroyed the last of the Water Tribe civilization. You're lucky you're here to see it."

Iroh speaks tersely. "Be careful what you wish for, Admiral. History is not always kind to its subjects."

"I suppose you speak from experience, but rest assured. This will be nothing like your legendary failure at Ba Sing Se." Zhao walks forward.

"I hope not, for your sake." Iroh says sadly.

"Tell the captains to prepare for first strike." Zhao orders.

Iroh walks away. Cuts to the bow of the lead ship breaking through thick ice floes floating in the water. Cuts to the interior of the ship, where Iroh is confronting Zuko disguised as a Fire Nation soldier. Zuko is forced to wear the disguise to keep the secret from Zhao that he survived an attempted assassination.

"We'll be landing soon. Do you have a plan?" Iroh asks.

Zuko removes his mask to reveal his face covered in cuts. "I'm working on it. Uncle, I feel as though someone's watching us." He puts his covering back in place.

The two head off in separate directions. Meanwhile watching them from nearby, Shizuka, who quickly moves to join Iroh.

"Sir, if I may speak my mind openly for a moment." She says cautiously the two walking alone away from any nearby soldiers.

"Go ahead." He says softly.

"Why join Zhao if you know the truth?"

"To support my nephew." Iroh answers honestly before walking in silence.

"Sir, will this war ever end?" She asks looking down.

"Hopefully, one day it will."

Back at the Northern Water Tribe, citizens flee to the town hall, as two watchmen hit a drum to signal the Fire Nation's approach. Sokka, Tai, and Yue make their way up the steps, but Yue stops the approach.

Sokka tries to drag her along. "What's wrong?" He points up to the citadel. "We have to go!"

Yue looks down Sadly; lets go of Sokka's hand. "No, Sokka, wait, I can't see you anymore. Not at all."

"What? We're just friends."

"I wish we could just be friends, but I like you too much and it's too confusing to be around you. I'm marrying someone else!" Yue turns away sorrowfully.

Tai glances to Yue and then sighs. "You don't love him, do you? You don't even seem to like him."

"But I do love my people." Yue says.

"You're not marrying ''them.''" Sokka objects.

Yue turns to face Sokka. "You don't understand. I have duties to my father, to my tribe. I have to do this. Goodbye."

She runs past Sokka up the stairs quickly. Closes up on Sokka, who looks on with dismay. Tai pats the boy on the back. "It's okay Sokka, trust me you'll see her again. But we need to move." A moment later the pair continue up the steps. The scene cuts to inside the chief's Royal Palace.

"The day we have feared for so long has arrived. The Fire Nation is on our doorstep. It is with great sadness I call my family here before me, knowing well that some of these faces are about to vanish from our tribe..." While saying this, the scene flashes from Yue to Pakku to Hahn. "...but they will never vanish from our hearts. Now, as we approach the battle for our existence, I call upon the great spirits. Spirit of the Ocean! Spirit of the Moon! Be with us! I'm going to need volunteers for a dangerous mission."

Sokka rises from his seat. "Count me in!"

"Sokka..." Katara looks up to her brother surprised.

Arnook stares at Sokka. "Be warned, many of you will not return." Several Water Tribe men rise and walk forward. "Come forward to receive my mark, if you accept the task."

Arnook paints three red line marks with his fingers on one man's forehead. The man walks away, slightly sorrowful. Sokka steps forward and Arnook paints the same three marks. He begins walking away sadly and turns to look at Yue. After staring at each other for a few moments, Sokka continues walking. Yue averts her gaze, closes her eyes and begins crying.

The scene changes to outside Agna Qel'a where Aang is perched on a snow mound, holding his staff. Arnook approaches him, standing a bit off looking out into the distance is Tai.

Arnook takes a breath. "The stillness before battle is unbearable. Such a quiet dread."

Katara joins them.

"I wasn't there when the Fire Nation attacked my people." Aang stares forward, determined. "I'm going to make a difference this time." He rises and holds his staff behind his back in a similar pose as seen in the opening sequence. The camera pans upward to the sky.

The scene changes to where Aang, Tai, Katara, Sokka, Appa and all the warriors are gathered at the wall. Something distant can be seen soaring toward Agna Qel'a from the horizon. Aang squints his eyes before realizing the object is a fireball. Cuts to Sokka and Katara, who look on in terror. The fireball collides into the wall of the city, sending Team Avatar and several warriors flying back. Cuts to the wall of the city, damaged and beginning to fall apart.

Cuts to another fireball being launched into the air. The fireball disintegrates a bridge within the city. Cuts to a trebuchet operator launching another fireball into the air, which hits the wall.

"Yip-yip!"

He and Appa take flight, heading toward the fleet. Cuts to the warriors who regather themselves, helping each other up.

Sokka pulls his arm free from the snow. "Katara!"

Katara uses waterbending to free herself from a snow mound she became buried underneath. Sokka smiles and hoists his sister onto her feet. Tai frees himself, the earth sleeve he wears being used to unearth himself from the snow. The two cast their eyes upward, catching sight of two fireballs that soar overhead. Tai growls and starts running deeper into the city before leaping into the air, he jumps directly into the path of one of the fireballs, and kicks it, destroying the earth used as the base sending small pebbles of flame and oil into the snow. Cuts to Appa who grunts, Aang guiding him, a determined look on his face. Cuts to bird's-eyes view of the ocean, Aang flying toward a single Fire Navy ship. Two fireballs are launched. Cuts to the deck of the ship, where trebuchet operators launch another fireball back to Appa and Aang. Cuts to fireball soaring straight toward Aang, who uses his glider to direct it into an icy cliff side near Agna Qel'a.

"I'll take it from here, boy." Aang says softly to Appa.

He jumps down from Appa and flies downward on his glider onto the first ship. Using airbending, he sweeps several trebuchet operators off their feet and leaps onto one trebuchet. An operator comes forward and slams a sledgehammer onto the machine, nearly striking Aang who manages to back-flip away. Cuts to where he stands on top of the contraption, two more operators approaching him from opposite directions, each holding a sledgehammer. The one on his right brings the sledgehammer down proceeded by the one on his left. He jumps into the air, avoiding both blows and completely collapses the trebuchet with his glider and the use of airbending. He lands onto the deck, triumphant.

He runs over to an unoccupied trebuchet, already loaded with a flaming boulder. He sticks a sledgehammer in another launcher's chain. When a soldier approaches him, Aang blasts him away, activating the catapult which launches the fireball straight into the deck, leaving a large hole. The camera zooms out on the damage.

Aang runs past two operators who quickly chase after him. He arrives at two trebuchets, one before him and one behind him, and tangles their chains together. He leaps onto the machine before him as the soldiers approach and slams his foot onto the pedal that activates the catapult. The catapult lunges forward, causing the second trebuchet to collide into the first, destroying both.

Smiling happily, Aang proceeds to another machine. Cuts to a burly man, who observes him evilly. Aang prepares to strike the machine with a sledgehammer only to turn around and catch sight of the man who attempts to land blows from afar with two sledgehammers, each attached to long chains. Aang jumps out of the way of several blows. Cut to the man who swings the chains around. Aang leans against a beam only for the two chains to wrap around the beam thus trapping him. He struggles to break free.

Cuts to the soldier, who is suddenly knocked over by Appa's paw. The chains snap and Aang breaks free.

"Appa!" Aang cheers. Appa leans over the deck of the ship and tosses the man overboard before turning to Aang, who runs over and embraces him. "Thanks for the rescue, buddy!"

His expression of relief becomes one of alarm when the ship begins to rumble. Cuts to an undamaged trebuchet that collapses when a gigantic spike of ice pierces straight through the hull and deck of the ship. Cuts to dozens of Water Tribe warriors riding on boats, who are using waterbending to suspend the ship. Cuts to the entire ship being uprooted. Cuts to Appa, who stands on the sloping deck, the ruins of machinery sliding downward past them. He and Aang take off. Cuts to the horizon, where an entire fleet comes into view, the ships large in quantity.

Aang stares in awe. "You've got to be kidding me..."

The scene cuts to the training for the mission.

"Men, you'll be infiltrating the Fire Nation Navy. That means you'll all need one of these uniforms." Arnook announces.

The camera pans upward, revealing a young man, Hahn, who appears in the uniform that will be used. Sokka laughs. The rest of the warriors turn to stare at him.

"What's your problem?" Hahn growls.

"Fire Navy uniforms don't look like that." Sokka chuckles.

"Of course they do. These are real uniforms captured from actual Fire Navy soldiers."

"When, like, a hundred years ago?" Sokka asks sarcastically.

Arnook deadpans to Sokka. "Eighty-five."

Sokka walks over and flings one of the shoulder spikes with his finger. "The Fire Nation doesn't wear shoulder spikes anymore. The newer uniforms are more streamlined." Sokka bends the tip of one of the shoulder spikes back with the tip of his finger and lets go. It bounces back to its original shape with a little comic sound effect.

"How do we know we can trust this guy?" Hahn turns to growl at Sokka, who glares at him in return. "Such bold talk for a new recruit."

"Sokka is from our sister tribe, Hahn. He's a capable warrior and I value his input." Sokka shoots Hahn a smug look; Arnook turns to the rest of the regiment. "Now, our first objective is to determine the identity of their commanding officer."

"His name is Zhao. Middle-aged..." Sokka traces imaginary sideburns with his fingers. "...big sideburns, bigger temper."

"Sokka, I want you to tell everything you know to Hahn. He's leading this mission. Hahn, show Sokka your respect." Arnook begins to walk away. "I expect nothing less from my future son-in-law."

Sokka stares at Hahn, mouth agape; points at him and narrows his eyes. "Princess Yue's marrying ''you''?"

"Yeah, what of it?"

Sokka turns away from Hahn, upset. "Nothing. Congratulations."

Scene fades to sunset where fireballs are continually launched, Tai continually attempts to destroy them but he's unable to catch them all with kicks or his swords, some of his clothes burning away from the fire which he can't control. A bird's-eye view is shown of the fleet attacking Agna Qel'a. Cuts to several fireballs; camera pans downward to show them hitting the city.

Pakku points to the sky. "Work with the prince of Omashu and stop those fireballs!"

Cuts to shot of oncoming fireball. The waterbenders bend up a column of water and freeze it, capturing the fireball. Cuts to side-view of the leading ships of the fleet, the uprooted ship in view. The scene cuts to the interior of Zhao's ship.

"It's almost twilight, Admiral. As your military consultant, I must advise you to halt your attack." Cuts to shot of the ship, sailing past a rising moon. "The waterbenders draw their power from the moon, and it is nearly full tonight. You should wait and resume the attack at daybreak." Cuts back to Iroh and Zhao.

"Oh, I'm well aware of the moon problem and I am working on a solution. But for now, daybreak it is." Zhao sighs.

The lead ship drops its anchor, followed by the rest of the ships, who drop their anchors and cease the attack. Cuts to a shot of Agna Qel'a, smoke billowing from several spots.

Yue can be seen looking out over the horizon. "They've stopped firing."

Yue and Katara stand side by side, viewing the city. Tai after a moment leaps in front of them landing on a knee out of breath and with burned clothes but no wounds that'll harm him. Appa appears over the horizon, flying toward them.

"Aang!" Katara cheers.

Aang lands on the ground, exasperated. Katara and Yue approach him.

Aang speaks, clearly exhausted, placing his hands on his head. "I can't do it ... I can't do it."

Katara stands next to Aang. "What happened?"

"I must have taken out a dozen Fire Navy ships, but there's just too many of them. I can't fight them all."

"But, you have to. You're the Avatar." Yue says pleadingly.

Aang lowers his head solemnly. "I'm just one kid." He buries his face in his arms. Katara kneels down beside him in an attempt to comfort him.

Tai meanwhile rolls off the railing and places an arms on it. He sighs looking down clearly in thought. The scene changes to nightfall on the lead ship.

Cut to inside a room where Zuko prepares a boat, winding up some rope.

Iroh enters. "If you're fishing for an octopus my nephew, you need a tightly woven net, or he will squeeze through the tiniest hole and escape."

"I don't need your wisdom right now, Uncle." Zuko speaks quietly.

"I'm sorry. I just nag you, because ... well, [Voice breaking slightly.] ever since I lost my son..."

"Uncle, you don't have to say it."

"...I think of you as my own."

Zuko faces his uncle, a softer expression on his face. "I know, Uncle. We'll meet again." Iroh hugs him. "After I have the Avatar." He turns away and gets on the boat.

Before anything else can be said a door closes behind them. The Zuko turns ready to fight but Iroh stops him seeing Shizuka. She looks at the pair her swords strapped to her waist.

"Shizuka?" Zuko asks confused.

Shizuka looks to Zuko solemnly. "Capture your Avatar prince Zuko, my only reason for being here..." She looks to Iroh and he nods back to her. "...is to get away from home. I plan to stay here at the North Pole as long as possible." She steps forward and enters the boat with Zuko, also with her clothes and a small amount of supplies. She sits and closes her eyes. Turning to Iroh. "Thank you for everything."

"Of course." Iroh nods. He speaks to both; mostly to Zuko. "Remember your breath of fire. It could save your life out there."

"I will." Zuko says lowering the boat, suspended by ropes, down the side of the ship into the water.

"And put your hoods up. Keep your ears warm." Iroh says.

"We'll be fine!" Zuko says.

The shot cuts to Agna Qel'a, several ships lying stationery ahead of him. Back inside the warriors' base. Hahn and Sokka sharpen their axes against grindstones.

"Let me tell you Sokka, I've courted a lot of girls, but Yue is the finest and she comes with the most perks." Hahn gloats, smugly.

"Perks? What does ''that'' mean?"

"I mean, Yue's nice and everything, but the points I'll gain with the chief aren't bad either."

Sokka scoffs annoyed. "Princess Yue is wasted on a self-absorbed weasel like you!"

"Whoa, hang on. What do ''you'' care?" Hahn asks, slowly growing more angered. Sokka closes his eyes sorrowfully. "You're just a simple rube from the Southern Tribe. What would you know of the political complexities of our life? [Smirking.] No offense. If anyone were to know it'd be that earth prince."

Sokka shouts and tackles Hahn; the two begin rolling around on the floor in a struggle. "You're just a jerk without a soul, no offense!"

The two continue to roll about on the floor. Cuts to a shot of Sokka and Hahn, each pulling the other's ponytail in fury. They are suddenly separated by Arnook and Tai

"That's enough! Sokka, you're off the mission!" Arnook announces.

Tai looks to Hahn unimpressed. "And yes, I do understand the politics behind it. But I still think you're a right-old cunt."

Sokka, his hair loose and hanging in locks, appears stunned before crossing his arms in anger.

"All right, fall in men! Everybody listen to what I say and we'll take out this Admiral Chō in no time!"

Sokka shouts, irritated, waves arms in gesture. "It's Admiral ''Zhao''!"

The scene changes to outside on the water where Zuko rows past, navigating his way through the path of ice spikes. Cuts to a view of a Water Tribe guard on patrol, pausing and looking out over the horizon just as Zuko's canoe disappears behind an ice spike. The guard continues walking. Cuts back to Zuko & Shizuka who continues to paddle toward the wall, before switching to a shot of them peering from behind an ice spike, the canoe pulled up onto the ice. Camera cuts to and zooms in on a shot of several Water Tribe guards marching atop the wall. Zuko turns around and sees a group of turtle seals resting by a hole in the ice. One seal plunges head first into the icy water. Zuko looks back up to the wall and begins approaching the hole. Shizuka shudders for a second and then gulps looking to the water and Zuko.

Zuko peers down into the hole. "Where are they going?" Cut to a shot of the hole, his face reflected in the water. "They're coming up for air somewhere."

He pulls down the mask covering his mouth and nose and inhales deeply. Cuts to shot of Zuko from beneath the water; he plunges into the water followed shortly after by Shizuka. The scene changes, cutting to a shot of the waxing gibbous moon hanging in the sky.

"The legends say the moon was the first waterbender." Yue, Katara and Aang stand on a balcony, looking up at the sky. "Our ancestors saw how it pushed and pulled the tides and learned how to do it themselves."

Katara hums. "I've always noticed my waterbending is stronger at night."

Yue smiles. "Our strength comes from the spirit of the moon. Our life comes from the spirit of the ocean." Aang stares on, with a dull expression on his face. "They work together to keep balance."

"The spirits!" Aang raises his head, startling Momo. "Maybe I can find them and get their help!"

"How can you do that?" Yue asks.

Katara approaches her. "The Avatar is the bridge between our world and the Spirit World! Aang can talk to them!"

Yue looks to Aang. "Maybe they'll give you the wisdom to win this battle!"

Aang waves arms out in gesture. "Or maybe they'll unleash a crazy amazing spirit attack on the Fire Nation!" The two girls look at him oddly; Aang looks at them and straightens up. "Or wisdom. That's good, too."

"The only problem is, last time you got to the Spirit World by accident. How are you going to get there this time?"

"I have an idea. Follow me." Yue begins walking away. Cuts to a shot of the chief's Royal Palace, the camera panning downward to the ground where Yue walks by, followed by Aang and Katara. Cuts to shot of Yue standing by a small, round wooden door, Aang approaching close behind.

Aang walks up to the door. "So, is this the way to the Spirit World?"

Yue laughs. "No. You'll have to get there on your own." She leans inward. "But I can take you to the most spiritual place in the entire North Pole." She says opening the door.

Aang steps inside. The camera pans upward and zooms in to reveal a small verdant oasis lying ahead, a waterfall flowing directly behind it. Zooms in on Aang, who gasps in amazement.

Aang runs to the back of the oasis and rolls around on the ground. "I never thought I'd miss grass this much!"

Katara approaches the oasis. "It's so warm here! How is that possible?"

"It's the center of all spiritual energy in our capital."

The two girls remove their coats. Cuts to view of two fish, one black and one white, swimming about in the pond. Momo sticks his hand in the pond and tries to grab the two fish in the water. Cuts to shot of the two girls standing over him, looking rather irritated.

"You're right, Yue. I can feel ... something. It's so tranquil." Aang readies himself to meditate.

Meanwhile, Zuko and Shizuka emerge from the water through another hole in the ice. He lies on his back on the ice and catches his breath. Shizuka however crawls to a nearby wall and curls up into a ball shivering. He rolls over onto his side, begins shivering and breathes fire to warm himself. A moment later he heads over to Shizuka and uses a very small flame to warm her up enough that she's no longer shivering and a bit dryer.

Zuko looks to the barking turtle seals. "Be quiet!"

The pack of seals quiets down. Cuts to shot of several seals, who watch as Zuko and the now recovered Shizuka walk past, Zuko pushing aside the heads of two of them. They resume barking. They make their way through another opening where water is pouring out. Cuts to shot of his foot boring into the wall as he tries to steady himself and make his way through the channel of water. Cuts to inside the channel, where he slowly crawls his way through. Shizuka sighs and after a moment follows after Zuko. Cut back to the warriors' base. Sokka is crouched on the floor, sharpening his boomerang when he is approached.

"Is something wrong, Sokka?" Arnook asks.

Sokka rolls his head sarcastically. "Oh, no. Hahn's out there on the top-secret mission while I'm here sharpening my boomerang. Everything's fine."

"Listen to me. I took you off the mission for selfish reasons. I have a special task in mind for you, and Mr. Yōgan."

"What, you want us to scrub the barracks?" Sokka asks.

"I want you to guard my daughter, Princess Yue."

Sokka rises and tries to act cool. "Oh ... Sure. That ... shouldn't be too hard."

Arnook exits the scene; Sokka's face falls. Tai smiles to his friend and starts walking away to sharpen his swords.

Zuko continues to make his way through the channel of water. He exits from the channel and floats to the surface of the water. Not so far behind him Shizuka. He emerges from the surface and inhales deeply several times. He proceeds to duck his head under the water, surveying the area. The camera zooms in on another channel. Zuko swims toward the channel and upward. As he attempts to resurface, however, the surface of the water had frozen into a thick ice patch. Zuko tries to break through the ice. He suddenly exhales, signaling his need for air. He heats his hands using firebending and melts a hole in the ice. Cuts to a tunnel way in the city, the ice steaming and finally melting away. Zuko emerges and catches his breath. He relaxes against the wall of the tunnel. A brief moment later Shizuka follows him and he helps her out of the tunnel. She closes her eyes shivering again and Zuko is forced to yet again warm her up with his own fire.

The scene changes back to the Spirit Oasis, where Aang is meditating, Katara and Yue watching him.

"Why is he sitting like that?" Yue asks.

"He's meditating, trying to cross over into the Spirit World." Katara begins to explain. Aang scrunches up his face in concentration. "It takes all his concentration."

"Is there any way we can help?"

Aang turns to the two girls angrily. "How about some quiet? Come on guys, I can hear every word you're saying!"

The camera zooms in on the pond, where the two koi fish are shown circling each other. Cuts to shot of beneath the pond, showing an underside-view of the two fish. Cuts to shot of Aang staring at the fish, seemingly mesmerized. Cuts back to two fish circling each other before switching back to Aang. Cuts back to image of the two fish, which morphs into an image of the symbols for yin and yang. Cuts back to Aang, as his eyes and tattoos to light up.

"Is he okay?" Yue asks concerned.

"He's crossing into the Spirit World. He'll be fine as long as we don't move his body." Katara says softly. Cuts to overhead shot of the pond. "That's his way back to the physical world."

"Maybe we should get some help." Yue says quietly.

Katara smiles. "No, he's my friend. I'm perfectly capable of protecting him."

Zuko speaks, sarcastically. He is without Shizuka, his appearance surprises Katara in this moment. "Well, aren't you a big girl now."

Katara turns alarmed and dismayed. "No..."

"Yes. Hand him over and I won't have to hurt you." Zuko says determined.

Yue runs from the scene as Katara assumes a defensive stance, Zuko appearing on screen. Cuts to Zuko, who kicks up his leg, sending a fire blast Katara's way. He fires more blasts from his hands. Cuts to shot of Zuko and Katara, Zuko continually firing as Katara conjures up water shields to deflect the attacks. Cuts to Katara, who draws water from the pond and sends the stream at Zuko, who is preparing another attack. The blast pushes Zuko back several feet and knocks him to the ground.

"I see you've learned a new trick, but I didn't come this far to lose to you." He turns around and fires another blast which Katara blocks by summoning another shield of water.

Cuts to shot of Zuko, Katara, and Aang as Katara sends a powerful jet of water at her opponent. The jet collides into Zuko, who is sent farther back. As he attempts to steady himself from the impact, small juts of ice form around his feet. Cuts to close-up of Katara, a determined look on her face. Water begins rising around Zuko and encircling him. Katara waves her arms about wildly, forming a ball of water around him which she freezes solid. Cuts to close-up of her as she smiles triumphantly. Cuts to Zuko imprisoned in the ice.

"You little peasant. You've found a master, haven't you?" Zuko growls.

The globule of ice begins glowing bright orange with heat and the ground rumbles. Cuts to view of entire globule as it heats up intensely before melting. He fires repeated attacks at Katara, who draws water from the oasis to deflect the attacks. She prepares to strike him with a water blast, however, Zuko manages to slip away and head toward Aang. Just as his fingers grasp Aang's collar, Katara fires a water blast, throwing Zuko to the other wall. She whips up a large wave and sends the attack at Zuko. The rush of water sends Zuko up the side of the cliff; she freezes the water, encasing him in ice.

Cuts to Pakku who looks over the horizon in the city as the sun rises.

The scene cuts to Zhao's ship. "It's daybreak at last. Let's write history." He mutters.

Back to the Spirit Oasis, rays of sunlight beam down on Zuko, who remains imprisoned in the ice, his head bent down. He feels the heat and sharply raises his head. With a determined look on his face, he breathes steam from his nose, melting the ice quickly. He lands on the ground and fires a blast at Katara, who had her back turned to him at that moment. She turns around swiftly and attempts to deflect the blast by conjuring a water shield; however, she creates the shield too late. The blast sends her slamming into the gate to the Spirit World, knocking her out. Smoke from the impact fills the screen. Cuts to shot of Zuko standing over her, holding Aang by the collar.

"You rise with the moon ... I rise with the sun."

The scene changes to where Fire Navy ships break through the city wall, their bows crumbling the wall, allowing soldiers armed with spears to rush in.

"The Water Tribe can try to resist the inevitable, but their city will fall today." Zhao says watching the battle before him.

Cuts back to the oasis. Camera focuses on a close-up of Katara, whose eyes suddenly snap open as she regains consciousness, only to realize Aang is gone. She crawls around, desperately searching for him.

"Aang!" Katara calls out.

Sokka, Tai, and Yue enter on Appa.

"What happened? Where's Zuko?" Sokka asks.

Katara lowers her head, dismayed. "He took Aang. He took him right out from under me."

Cuts to shot of Momo looking sorrowfully from the edge of the pond.

"Where did they go..." Sokka asks.

The camera pans upward to above the oasis where Zuko is seen walking through a blizzard with Aang in tow. Cuts to shot of them walking away. The camera pans upward to show the snow falling.

Cuts to the Northern Water Tribe as the siege continues. Four fireballs streak past the screen. Cuts to overhead shot of Agna Qel'a as the fireballs strike various locations. The camera pans downward past the Tribal Chief's palace to the Spirit Oasis where Appa can be seen presiding by the pond. Cuts to shot of the two koi fish, the Moon and Ocean Spirits, swimming in their usual circular pattern.

"I can't believe I lost him." Katara says.

Cut to full shot of the pond, Sokka and Yue standing beside Katara, who is kneeling on the ground. Tai sighs as he looks to the fish, in the middle before he starts walking into the city.

"You did everything you could, and now we need to do everything we can to get him back." Cuts to shot of Katara who looks up at her brother, tears in her eyes. "Zuko can't have gotten far. We'll find him. Aang's gonna be fine." Sokka notices Tai walking away. "Hey, where are you going?"

Tai opens the door out of the oasis. "I feel like there's something I need to do... I'll be back." Tai walks away leaving the others behind.

Katara stares at the door as it closes. "Okay." She closes her eyes and gets up. Camera pans over to where Momo remains motionless on the ground. Cuts to shot of Appa, Katara having mounted the bison. "It's all right. You stay here, Momo, in case Aang or Tai come back."

"Yip, yip." Sokka commands.

The camera pans upward as Appa takes off, heading upward to a location above the oasis, a vast frozen tundra where a blizzard is raging. Cuts to shot of the icy terrain of the tundra as the bison progresses. Cuts to shot of the ground, a path visible in the snow where someone has clearly been trudging along; the camera pans upward. Cuts to shot of Zuko plodding through the snow, his face partially covered to protect him from the cold, Aang slung across his back. Cuts to shot of an unconscious Aang, his tattooed arrows glowing.

The scene changes suddenly, zooming out on Aang who is sitting in a meditating position on a small wooden platform in an unknown location in the Spirit World. Cuts to shot of his surroundings which are not that of the icy tundra, but a mystical swamp dotted with trees. A large white bird of some sort flies past. Cuts to shot of Aang as the bird flies over the screen; he stands and begins wandering about. Cuts to shot of a figure in the distance sitting beneath a simple wooden entranceway. The figure can be heard uttering the sound "Ohm". Aang appears on-screen, turns his head in the direction of the sound and begins making his way toward the figure. Cuts to side-view of the figure, a monkey-like creature, as Aang approaches him, before cutting to a shot of the two with the figure's back to the camera.

"Hello? I'm sorry to disturb you. I just really need to find the Moon and the Ocean Spirits." Aang says politely.

"Go. Away." The Baboon Spirit says. A moment later he opens one eye. "You're still here?"

"Yes, I need -!"

The Baboon spirit shuts his eyes tightly. Louder, trying to distract himself. "Ohm" A firefly flies past; points at the insect. "Perhaps that thing will help you. Chase it." Aang runs after it. The mystical monkey keeps his eyes shut for a second more before opening one to confirm Aang's departure. He shakes his head and breathes a sigh of relief. "Finally."

Cuts to a shot of Aang chasing the insect throughout the swamp and up a tree. He leaps up and manages to grasp hold of it and is delighted in doing so. Cuts to zoomed out shot of him as he lands on a tree branch which instantly shrivels up and disappears entirely, causing him to fall. Cuts briefly to close-up shot of an alarmed Aang before switching to a shot of him falling into the water. Aang is shown lying on his back in the water, the firefly having escaped his grip. It flies away as he tries to reach it again.

"Come back!"

He stands up. Cuts to shot of him looking down at the water, when Roku suddenly appears before Aang in a reflection in the water. "Hello, Aang."

Aang speaks, surprised. "Roku!"

The scene cuts back to the real world, where Zuko continues his trek through the icy tundra. Cuts to close-up of him before a shot of the ground where he steps on ice that begins cracking beneath his feet; his eyes widen in surprise at this. Cuts to overhead shot of him, the camera zooming out, as the ice begins to splinter and cave in. Cuts to shot of him on high alert as he begins running, before switching to an overhead shot of him as he races through the snow. Cuts to shot of him as the impact of the ice caving in throws him off-balance.

Zuko is thrown several feet away and lands roughly in the snow, losing his grip on Aang and kicking up a cloud of snow. The cloud dissipates, showing Zuko and Aang lying in the snow. Cuts to shot of Zuko, as he raises his head and looks at the scene. Cuts to shot of the aftermath of the cave-in, the ground severely disrupted, and a shot of Zuko once more. He spots a cave off in the distance.

"Shelter." Zuko drags Aang into the cave and ties him up.

Back in the city Tai walks down the streets with a purpose he walks into a building filled with pots and small wooden structures. Upon entry he draws one of his swords, himself glancing around the entire room, a moment later he turns "Wait!" Tai says panicked, while he blocks using a sword.

Back in the Spirit World, Aang is speaking with Roku.

"Roku, the Water Tribe's under attack. I need to find the Ocean and the Moon Spirits."

Roku rises out of the reflection in front of Aang. "The Ocean and the Moon are ancient spirits. They crossed over the Spirit World to the mortal world very near the beginning. There is only one spirit I know of who is old enough to remember."

"Who?" Aang asks.

"The spirit's name is Koh, but he is very dangerous. They call him the Face Stealer." Roku says glowering down at Aang, who looks horrified. "When you speak with him, you must be very careful to show no emotion at all. Not the slightest expression, or he will steal your face.

Aang looks even more horrified but calmly nods, understanding the situation.

Meanwhile, in the real world, Katara, Sokka, and Yue arrive to where the ice broke earlier. In the cave, Zuko is keeping warm with Breath of Fire while Aang, now tied up, remains in the Spirit World.

"I finally have you, but I can't get you home because of this blizzard." Zuko stands up and looks outside the cave. "There's always something. Not that you would understand. You're like my sister. Everything always came easy to her. She's a firebending prodigy, and everyone adores her. My father says she was born lucky. He says I was lucky to be born. I don't need luck, though. I don't want it. I've always had to struggle and fight and that's made me strong. It's made me who I am."

Meanwhile, back at the invasion, the Fire Nation has breached part of the wall. On the lead ship, Zhao and Iroh are speaking.

Iroh glances over. "I don't need to remind you we have a time limit. If we don't defeat the Water Tribe before the full moon rises, they will be undefeatable."

Zhao smirks. "I assure you I have everything under control. I intend to remove the moon as a factor."

Iroh stares, wide eyed. "Remove the moon? How?"

Hahn appears behind them and points his spear at Zhao. "Admiral Choi! Prepare to meet your fate!"

He charges at Zhao, who casually tosses him overboard as he is still screaming. A loud splash is heard, while Iroh shakes his head in disappointment.

Zhao continues as if nothing happened. "As I was saying, years ago I stumbled upon a great and powerful secret: the identity of the Moon Spirit's mortal form."

"What?" Iroh mutters.

"I was a young lieutenant serving under General Shu in the Earth Kingdom." Fade to a flashback of a young Zhao tearing through scrolls in a library. "I discovered a hidden library. Partially underground, in fact. I tore through scroll after scroll. One of them contained a detailed illustration, and the words "moon" and "ocean". I knew then that these spirits could be found and killed." The memory ends with a close up of Zhao's eyes, fade to the present. "And that it was my destiny to do so."

Iroh looks over, speaking somewhat angrily. "Zhao, the spirits are not to be trifled with!"

"Yes, yes ... I know you fear the spirits, Iroh. I've heard rumors about your journey into the Spirit World. But the Ocean and Moon gave up their immortality to become a part of our world. And now they will face the consequences." Zhao says dismissively.

Tai runs through the city, swords drawn as he battles attacker after attacker. He dodges a blast of fire before cutting a guard down, he then ducks under another while kicking a solder through a door, as he slices the soldier in front of him down. He turns and jump kicks the person he kicked through the door, as they slam into a wall. He turns raising his swords as he stares at the corner of the shop.

Tai lowers his swords, in the corner is Shizuka, the pair circling each other swords still drawn.

"Are you with the Admiral?"

Shizuka takes a step back. "I'm just trying to get away from the war."

Tai glances at the soldier knocked out against the wall. "Well..."

Shizuka hides behind a large pot. "Just, go do other things please."

Tai sighs sheathing his swords he extends a hand. "I'm Tai Yōgan, let me get you somewhere safe, I promise, I'll keep you protected until the battle is over."

Shizuka stares at Tai for a moment unmoving.

Back in the Spirit World, Aang walks up a giant tree, seeing the entrance to the cave Koh can be found in. Aang stares and slightly steps toward the cave hearing creepy noises. He glances to his left noticing that the noise wasn't coming from the cave.

Aang sighs in relief. "You're just a curly tailed blue nose."

The monkey turns its head toward Aang, exposing that he has no face.

Aang recoils, startled. "Aaahhh!" Aang takes a deep breath and speaks with his and Avatar Roku's voices combined. "Show no fear. Show no emotion at all."

Aang steps into the cave with a straight face. "Hello? I-I'm looking for a spirit named 'Koh'." As Aang says the spirit's name, some "roots" on the ceiling begin to move. Aang looks around, sensing movement, but sees nothing. Cut to a close-up of Aang's face that pans slightly left, leaving the right hand portion of the screen over his shoulder momentarily empty. A moment later, a white face appears with gray patches around its eyes and luscious, blood-red lips. Cut to a close-up of the lips, which smile. Cut to a profile of Aang, his face emotionless. Suddenly, a huge centipede-like body arcs around Aang and appears in front of his face. The white, clown-like face of Koh is inches away from Aang. Around the spirit's face are eight additional legs.

Koh smiles creepily, circling Aang. "Welcome!"

Aang keeps his face straight. Cut to a long shot; the spirit hangs from the ceiling in front of Aang, who bows with his hands clasped in front of him in a gesture of honor.

"Thank you."

Koh wheels around Aang to look at him from behind. His voice is low and melodic, almost purring. "My old friend, the Avatar. It's been a long time."

"You know me?" Aang asks.

Koh turns away from Aang. "How could I forget..." He switches with a "winking" effect, as if some sort of nictitating membrane closes briefly over the old face to reveal a new one, to a mad face of a middle-aged, mustached man with thick eyebrows, long mustache, and beard; angrily. "...you? One of your previous incarnations tried to slay me! Nearly eight or nine hundred years ago."

Aang speaks confused, yet seriously. "I didn't know that. Why did he, or I, try to kill you?"

Koh switches to Ummi's scared, sad face. "Oh, it was something about stealing the face of someone you loved." Cut to a close-up of Aang with the camera slowing, zooming in on his face. Cut back to Koh, whose face turns malicious and switches to a baboon's while laughing. Switch to a side-shot; Aang keeps a straight face while not taking his eyes off Koh as he circles around him. "Of course, that's all behind us. Why should I hold a grudge against you for something in a past life? After all, you're a different person now." Koh speaks into Aang's ear from behind. "You've come to me ... with a new face."

Aang closes his eyes and takes a deep breath to the words into his ear, crossing the scene to the real world, Zuko seeing his breath. "Guess we'll be here awhile."

Cut to exterior of the cave. Cut to Appa in the blizzard.

"Don't worry, Prince Zuko can't be getting too far in this weather." Yue says hopeful.

"I'm not worried they'll get away in the blizzard. I'm worried that they won't." Katara says quietly.

Sokka places a hand on Katara's shoulder, "They're not going to die in this blizzard. If we know anything, it's that Zuko never gives up. They'll survive, and we'll find them."

The screen flashes white back to the Spirit World to Aang's talk with the face stealer, Koh circling loosely around Aang.

Koh continues to circle around Aang. "It's been a long time since I've added a child's face to my collection." His face is now that of an owl. "So ... how may I help you?"

"I need to find the moon and the ocean." Aang says.

"Their spirit names are Tui and La, push and pull. And that has been the nature of their relationship for all time."

"Please. Help me find them. An entire culture could be destroyed if I don't get their help." Top-down view of Koh who changes his face to that of an old man. Aang is visible below him.

"Oh, you think you need their help." Koh looks to the side. "Actually it's quite the other way round." In an instant, Koh turns and bolts to Aang, stopping just short of the young Avatar; with an angry blue ogre-like face with red eyes and upright fangs. "Someone's going to kill them!" Aang closes his eyes briefly before opening them to look at Koh.

"What do you mean? How can I find them and protect them?"

Koh flips back to his white face. "You've already met them, actually." View of Koh from behind Aang as Koh moves to look away, turning his back on Aang. "Tui and La, your moon and ocean, have always circled each other in an eternal dance. They balance each other, push and pull, life and death, good and evil, yin and yang."

Aang's eyes open wide as he experiences a flashback of the white and black fish circling each other in the pond and the vision he had of them as they turned into the yin and yang symbol just before he entered the Spirit World. Back to Aang.

Aang speaks excitedly. "The koi fish!" Hearing the emotion in Aang's voice, Koh quickly reels around to stare at the now expressionless face of Aang. "I must be going now."

Koh flips to the face of a bald, young man. "We'll meet again." Koh recedes into the shadows as Aang walks out of his cave.

Cut to Aang running in front of the tree that is Koh's lair. He stops and talks to the ground. "The spirits are in trouble, I need to get back to the physical world."

Cut to Roku's image on the ground. "A friend is here, to guide you back."

Aang turns around; excitedly. "Hei Bai!"

The spirit groans as Aang jumps onto him and sets off.

Tai exits the building passing above him is two fireballs that hit the city of Agna Qel'a. Cut to two Water Tribe members fleeing as a tank destroys a totem pole behind them. Cut to two Water Tribe members trying to stop a tank. Cut to a view of the ocean with many fire navy ships and the moon looming behind. Cut to a bridge as two fire navy soldiers move in front of the camera as a waterbender drops down to move the bridge back from where the fire navy soldiers came from, taking the soldiers with it. Cut to a waterbender facing a tank, submerging the tank in the snow and ice around it. Cut to waterbenders attacking fire navy soldiers with shards of ice, who use shields to protect themselves. Cut to a shot behind Pakku who freezes and takes down eight oncoming soldiers. Pakku dodges a fire blast, having become surrounded with tanks and soldiers. Unleashing a wave of water he slices tanks wheels off and freezes soldiers behind him in ice. Pakku lifts himself into the air with water while being fired upon by firebenders. Avoiding the blasts, he knocks the firebenders away using his water cyclone as a wave. Cut to waterbenders sending a tank flying toward Zhao.

"We'll be following this map to a very special location. And when we get there, we're going fishing." Zhao smirks.

Cut back to the Spirit World. Aang arrives at his starting location and jumps off Hei Bai.

"This is where I came in, but how do I get back?"

Hei Bai stands on his hind legs and sends a beam of energy at Aang, who disappears to the physical world.

The Baboon spirit sitting on a rock opens his eyes. "Good riddance."

Hei Bai, having assumed his monstrous form, shoots an intense beam from his mouth at the baboon spirit sending it flying, before reverting to his original form. Back in the physical world, cut to a view of the arch way and water.

"Momo!" Aang walks toward Momo. Closer view of Aang with Momo. "Momo. Oh no, where's my body?"

Aang is surrounded by energy and flies into the air.

Tai having exited the building sees the beam of energy flying away watches it fly away, he runs towards the Oasis.

"Go, I'll reconvene with you there!" Tai shouts as he places a hand on his swords.

Pan from behind Tai out to a wide-view of all of Agna Qel'a as Aang continues to fly toward the cave. Cut to close shot of Katara. Noticing Aang she turns around. Cut to shot of Appa flying in the sky as Aang shoots past overhead to the cave.

"Look, that's gotta be Aang! Yip-yip!" Katara says watching.

Cut to Aang entering the cave, filling it with light. Cut to Aang waking up, attempting to get out of his restraints and noticing Zuko.

"Welcome back." Zuko glares.

Cut to close-up of Aang as he narrows his eyes. "It's good to be back."

Aang airbends Zuko into a wall and propelling himself backward out of the cave. Cut to cave exterior. Close-up of Aang wriggling like a worm in an attempt to get away, only to be caught by Zuko.

Zuko pulls Aang up by his collar as seen from behind Aang. "That won't be enough to escape."

Aang cheers. "Appa!" Appa lands. Katara slides off. Close-up of Zuko.

Zuko throws the tied-up Aang aside who yelps. "Here for a rematch?"

Katara steps forward confidently hile countering his fire blasts. "Trust me Zuko, it's not going to be much of a match."

Katara uses waterbending to launch Zuko into the air before plummeting him down to the ground, knocking him out. Close-up shot of Sokka running toward Aang to untie him with Zuko lying unconscious.

"Hey, this is some quality rope!" Sokka comments.

"We need to get to the oasis; the spirits are in trouble!" Aang shouts.

Switch to a wide-view of the area with Aang airbending himself atop Appa. Close-up shot of Aang landing on Appa. "Wait, we can't just leave him here."

"Sure we can. Let's go." Sokka says climbing Appa's tail.

"No, if we leave him he'll die." Aang says. Aang airbends himself off Appa and retrieves Zuko, bringing him to Appa.

Sokka speaks sarcastically. "Yeah, this makes a lot of sense. Let's bring the guy who's constantly trying to kill us."

Appa takes off. Cut to Tui and La in the oasis lake. Zhao grabs Tui from the water, placing it in a sack. The moon goes red, followed by everything else.

Cut to close-up of the now red moon. Tai passes in front of the moon, landing in the Oasis a second later swords drawn as he looks to Zhao. Cut to a view of all of Agna Qel'a turning red. Cut to Pakku who loses his waterbending and falls to the ground. Cut to a waterbender attempting to waterbend but loses his bending. Cut to three more waterbenders, bending water, but they too lose their bending. Cut to Fire Navy soldiers firebending. Cut to Appa flying with the red moon behind him. Appa groans as it cuts to the saddle.

Yue grabs her head as if in pain. "Are you okay?" Sokka asks.

"I feel faint." Yue says softly.

Aang holds his head with one hand. "I feel it, too. The Moon Spirit is in trouble."

Cut back to the saddle. "I owe the Moon Spirit my life." Yue says softly.

"What do you mean?"

"When I was born I was very sick and very weak." [Flashback to Yue as a baby.] Most babies cry when they're born, but I was born as if I was asleep, my eyes closed. [Cut to waterbenders attempting to heal Yue as a baby.] Our healers did everything they could. [Panning shot of Yue and the waterbenders, along with Yue's parents.] They told my mother and father I was going to die. [Cut to Arnook staring at the moon.] My father pleaded with the spirits to save me. [Cut to shot panning down from the moon to the oasis.] That night, beneath the full moon, he brought me to the oasis and placed me in the pond. [Cut to Yue being placed into the pond.] My dark hair turned white. [Close-up of Yue in the oasis.] I opened my eyes and began to cry, and they knew I would live. [Cut to Yue in her parents arms with the archway and moon behind them.] That's why my mother named me Yue. [Cut back to Appa's saddle.] "For the moon."

Cut to Zhao at the oasis. "I am ... a legend, now!" Cut to panning shot from Zhao's hand, grasping the bag with Tui in it, down to his head. "The Fire Nation will, for generations, tell stories about the great Zhao, who darkened the moon. They will call me, Zhao the Conqueror, Zhao the Moon Slayer, Zhao the Invincible!" Momo jumps on top of Zhao's head. "Ugh ... Get it off! Get it off!"

Cut to wide-view of oasis as Momo flies away toward the camera. Tai surges forward himself easily fighting off a pair of Zhao's guards but stops just as Aang and the others arrive. Panning view of Momo landing on Aang's arm and running to his shoulder, with Katara and Sokka are behind him. Cut to Zhao and his soldiers, readying themselves for battle. Cut to Aang, Sokka and Katara readying themselves. Panning shot of the oasis.

"Don't bother." Zhao lifts the sack up threatening to kill Tui.

Aang's eyes widen, he lowers his staff slightly as he and the others surrender. "Zhao, don't!"

"It's my destiny, to destroy the moon and the Water Tribe."

Tai steps forward. "Destroying the moon won't hurt just the Water Tribe." Close-up panning shot of the sack with Tui inside and Zhao. "It will hurt everyone, including you." Cut to panning shot of the oasis.

Aang nods. "Without the moon, everything would fall out of balance. You have no idea what kind of chaos that would unleash on the world."

"He is right Zhao." Iroh says stepping out from the dark trees behind Zhao.

Zhao sighs. Cut to wide shot of oasis; Zhao speaks calmly to Iroh. "General Iroh, why am I not surprised to discover your treachery?"

Iroh takes off his hood. "I'm no traitor, Zhao, the Fire Nation needs the moon, too; we all depend on the balance. Whatever you do to that spirit I'll unleash on you ten-fold. Let it go, now!"

Tai readies his blades and takes a soft breath. "Let it go, Zhao. "

Zhao releases the koi fish into the oasis. Cut to close-up of Zhao as he hesitates before striking the koi fish with a fire slice out of anger. Cut to wide-view of the oasis. Cut to Iroh recoiling from the flames. Cut to Aang looking on and up at the moon. Cut to Tai eyes widened as he looks to the fish. Cut to a view from the oasis to the sky as the moon fades out and the world goes gray. Cut to Zhao looking up until Iroh begins firebending at him. Tai rushes forward blood being spilled in the Oasis two of Zhao's guards now dead. Zhao dodges and counters his firebending while retreating toward his firebending soldiers. They are swiftly defeated as Zhao escapes, Tai chases after him. Cut to show La circling the now dead Tui. Cut to Aang and the others looking on in disbelief and moving toward the water. Yue is seen looking on; her forward movement reveals that Zuko has escaped from behind her. Iroh picks up the dead koi fish.

"There's no hope now, it's over." Yue says sadly.

Aang enters the Avatar State. "No, it's not over."

Cut to wide shot of oasis as Aang enters the water. Cut back to the others looking on. Aang stands in a meditative stance as La circles him. Close-up shot of Aang and La as the latter's eyes light up. Side-view of Aang as he descends into the water. Wide shot of the whole oasis as blue lightning-like energy expands from the oasis island into the water. Wide shot of Agna Qel'a as the oasis begins to light up in the same blue color. Cut back to Katara and the others watching. The energy moves to the edge of the oasis, rising up to form a giant amphibious-like creature, facing out toward the sea, with Aang in the center, controlling it. Cut to the Fire Nation soldiers in the city looking on at this creature's sudden appearance. Cut briefly to Pakku and other Northern Water Tribe members before changing to a view of Aang moving past a river, Fire Nation soldiers on one side, Pakku and his group on the other. The Water Tribe all bow down as the Fire Nation soldiers prepare to attack. Aang, controlling the massive creature, begins to head to the ocean, laying waste to any Fire Nation soldiers on the way.

Cut back to Zhao who continues to flee only to be attacked by Zuko and then in front of him, Shizuka draws her swords.

"You're both alive?" Zhao says surprised.

Zuko growls Angrily. "You tried to have me killed!" Zuko attacks Zhao.

"Yes I did." Zhao admits. Zuko approaches Zhao as we see the giant energy form make its way toward the ocean Shizuka also approaches; her and Zuko now circling around Zhao. "You're the Blue Spirit, an enemy of the Fire Nation! You freed the Avatar."

Zuko glares. "I had no choice." Zuko continues his attacks, but they are blocked by Zhao.

"You should have chosen to accept your failure; you're a disgrace. Then, at least, you could have lived!" Zuko, Shizuka, and Zhao begin to fight.

Back at the oasis, Iroh places the dead koi fish in the water.

"It's too late, it's dead." Katara mutters.

Iroh notices Yue. "You have been touched by the Moon Spirit. [Close-up of Yue.] Some of its life is in you."

Yue Noda. "Yes, you're right. It gave me life, maybe I can give it back."

"No! You don't have to do that." Sokka reaches to stop her.

"It's my duty, Sokka." Yue says.

"I won't let you!" Sokka declares holding her hand. "Your father ordered me to protect you."

"I have to do this." Yue declares. Yue's hand slips out of Sokka's as she places her hands on the koi fish. The koi begins to glow and Yue closes her eyes.

Yue falls as Sokka catches her. "No! She's gone, she's gone." Sokka hugs her body.

Cut to Aang as he approaches the sea and sends the fire navy ships back out into the ocean. Aang continues to destroy ships and drive the rest back out. Cut back to Sokka holding Yue. Yue fades and disappears as the koi begins the light up and glow. Iroh places the koi back into the oasis water. The entire lake begins to light up until energy floats up into the air forming an image of Yue. Side-view of the oasis.

"Goodbye, Sokka. [Close-up of Sokka and Yue as she comes to kiss him.] I'll always be with you."

They kiss and Yue disappears as Sokka looks up to the moon as it reappears in the sky, bringing the color back. Cut to Aang, still fused with the Ocean Spirit, in front of Agna Qel'a. Aang looks up and notices the moon has returned. The Ocean Spirit fades into the water and moves back to the city, dropping Aang off on a wall as he leaves the Avatar State.

Cut to Zuko, Shizuka, and Zhao fighting on a bridge. Zuko & Shizuka gain the upper hand and Zhao notices the moon has returned.

"It can't be!" Zhao mutters.

Zhao turns and dodges an attack from Tai, who begins fighting Zhao only with fists, Tai leaps back after a moment as Zhao is consumed by the energy in the shape of a hand and dragged toward the water. Zuko and Shizuka both rush forward extending arms towards Zhao.

"Take my hand!" Zuko shouts.

Zhao considers it for a moment before retracting his hand. The energy plummets into the water, Zhao dragged along with it, and dissipates. Zuko looks down to where Zhao was dragged in, as Shizuka turns around finding Tai behind them.

Tai sighs. "You're free to go." Zuko turns around ready for a fight as Tai bows half way showing respect to Zuko. He speaks as he rises from his bow. "I have no desire to arrest a fellow monarch, even one banished by his own family." Tai extends a hand to Zuko. "Prince Zuko, I do hope to see you again, and test my skills."

The trio stare to each other with curiosity as Zuko flees and Shizuka walks over to Tai and falls to her knees extending her arms. "I'll be your prisoner."

Tai glances around. "That's not..." Several waterbenders surround the pair before Tai wraps some stone around her arms and lifts her up. "I'll be taking care of this one." Tai announces to the WaterBenders. He speaks quietly to Shizuka as she stands next to him. "Just play along."

Cut to Pakku and others on a ledge overlooking the city. Cut to a close-up shot of Pakku, Katara stands behind him.

"I've decide to go to the South Pole. Some other benders and healers want to join me. It's time we helped rebuild our sister tribe." Pakku declares.

"What about Aang? He still needs to learn waterbending." Katara asks.

Pakku smiles. "Well, then he better get used to calling you Master Katara."

Cut to Arnook and Sokka standing on the ledge looking at the moon.

"The spirits gave me a vision when Yue was born. I saw a beautiful, brave, young woman become the Moon Spirit. [Sighs.] I knew this day would come." Arnook says quietly.

"You must be proud." Sokka says sadly.

"So proud ... and sad."

Cut to Zuko and Iroh on a raft floating away from Agna Qel'a.

"I'm surprised Prince Zuko, surprised that you are not at this moment trying to capture the Avatar." Iroh says.

Zuko looks down. "I'm tired."

"Then you should rest. A man needs his rest."

Cut to Aang looking out on the ledge in Agna Qel'a. Katara stands behind him. He realizes she's there and turns around. They embrace. Momo chitters.

"You too, Momo." Katara says softly.

Aang smiles. "Come here." Momo leaps on to Aang's shoulders as we see Sokka place his hand on Aang's shoulder nearby Tai approaches with Shizuka still with cuffs around her hands. All four of them look out to the ocean and the moon as Appa rises up in front of them.

Cut to Fire Lord Ozai's chambers. Cut to panning shot of Azula.

"Iroh is a traitor, and your brother Zuko is a failure. I have a task for you."

Close-up of Azula, looking up and smiling.

Chapters End.