(A/N: Kirby Morrow, the voice actor for Ninjago had died. For Kirby. For Cole)

At the Ninjago Museum of History, Jay is holding the head of the Samukai mannequin.

"This ends now, Samukai. Nope, pretending this is the actual Samukai doesn't make cleaning up the museum any more interesting. This is so lame. We're Ninja, not janitors." Jay groans.

Lloyd passes by with the Chen mannequin on a cart. "Come on, Jay. We're all kind of responsible for the damage to the museum. After all, if we hadn't had that massive battle on the Day of the Departed, this place would still be in one piece."

"Yeah, and whose fault is that, Cole?" Jay accuses. 

Cole looks at Yang's portrait. "Okay. How many more times do I have to say I'm sorry for accidentally unleashing the ghostly forces of evil that attacked Ninjago?" He then places the portrait in a nearby wheelbarrow.

Jay places the Samukai head in a nearby box. "How high can you count?"

Cole grabs the wheelbarrow handles, but his arms soon glow orange, making him let go, as Kaylee walks by, silver mist floating around objects.

"Eh, speaking of which, you're still not used to having your old, non-ghost hands back?" Kaylee questions, as Jay takes the box with him.

Cole's arms return to normal and he starts cleaning up the minor mess he made. "Oh, I'm working on it."

Cole catches up to Jay as they came out to the main part of the museum.

"Also, why aren't you doing any heavy-lifting?" Jay asks.

"I'm working smarter, not harder," Kaylee answers, as she uses her powers to replace the objects floating midair.

"We could've finished earlier!" Jay groans, as Nya struggles to carry a box.

"This is exhausting." Nya puts the box down to straighten her back and lays her head on the box. "If I could go back in time, I'd tell Dr. Saunders we were too busy to help."

Zane pulls a cart with the Cryptor mannequin. "Nya, you may recall that the rest of us once time-traveled. It can have devastating effects, and should not be used lightly. Certainly not to get out of labor."

"It's just an expression, Zane." Nya walks over to Kai, as the other start to organize things. 

"Guys, look what I found!" Cole yells 

The others come up to Cole, who is looking at a giant portrait.

"Uh, isn't that Garmadon?" Jay questions.

"It is." Kaylee nods. 

Cole turns to Lloyd, who is coming up to them. "Lloyd, that's your dad."

"And there's Master Wu." Kai points.

"He looks so...young." Nya comments.

"Look at them, my father and my uncle, Ninjago's two greatest Elemental Masters. I wonder if I'll ever live up to their legacy." Lloyd questions.

"You already have." Kaylee answers, kissing Lloyd's cheek. 

"First Kai and Nya, now Lloyd. It's family picture day at the museum." Jay laughs.

"Does anyone recognize this battle?" Cole asks.

"Pixal, analyze." Zane answers.

"Facial contour mapping indicates this scene takes place forty years ago during the Serpentine Wars." Pixal answers.

"During the Serpentine Wars? But Ninjago was at peace. Who would they be fighting?" Cole asks.

Dr. Saunders comes up to them, with a tray of drinks. "Refreshing time. Hot, sweaty work deserves a cool drink."

Kai takes a cup. "Ah, thank, Dr. Saunders." They each take a cup while Cole hands one to Nya and start drinking, Kaylee shakes her head at the prospect of drinks.

"Enjoy the pickled beet tea." Dr. Saunders answers.

They soon spit it out, in disgust

"Uh..." Cole accidentally drops his. "Oops! Hehe. New hands. So clumsy."

Jay looks at each of them in disappointment before finishing his off. "Eh." He drinks his cup and finishes. "Mmm."

Lloyd puts his cup back on the tray. "What's this painting?" He shows Dr. Saunders the painting.

"Oh, this? Nothing. Minor skirmish. No historical significance. That is why I don't hang it in the main gallery." Dr. Saunders answers.

Jay puts his cup back on the tray. "It looks pretty significant to me. This thing is huge."

"Yes, a huge myth. The folklores." Dr. Saunders scoffs.

Zane puts his cup back on the tray. "Even if it is a myth, who are these men Masters Wu and Garmadon are supposed to be fighting? I have no data on them."

"There is a legend." Saunders places the tray on a nearby box. "Twin brothers called the Hands of Time."

"The Hands of Time?" Kai questions.

"They could allegedly manipulate time. Speed it up, slow it down, all sorts of things." Dr. Saunders laughs. "See what I mean? Manipulate time? A ridiculous fairy tale."

"Not a fairy tale." Kaylee shook her head. 

"Who's this one?" Nya points to the man on the right.

"Oh, this handsome-looking fella? Ha! The legend says his name is Krux." Dr. Saunders answers.

"And who is the nasty-looking guy?" Lloyd points to the man on the left.

"In the stories, he's called Acronix." Dr. Saunders answers.

The timewave continues on to Ninjago City. At the museum, the Ninja was just leaving

"6 p.m. Quitting time." Kai cheers. They soon disappear and reappear on the Destiny's Bounty. Alarms soon go off as they were all confused with Jay falling down.

"What just happened? Time just..." Lloyd asks.

"Moved forward?" Kaylee answers.

"Um, weren't we just outside? When did we get here?" Cole questions.

"How did we get here?" Nya asks.

"My circuits are picking up an energy displacement," Zane informs. 

"There was a displacement all right. It displaced us right in here." Kai answers.

"What is going on?" Lloyd questions.

Jay jumps up and covers his ears from the noise. "I don't know. But it's loud!"

Nya is looking at some panels as the alarms are still going off. "These energy readings are off the charts. Where is it coming from?"

"I'm trying to pinpoint the location." Zane answers.

Jay is still annoyed by the alarm. "How about pinpointing the location of the off button? These alarms are giving me a..." Kai slams a nearby console, turning the alarm off. "...headache. Thank you."

"Hm. This is surprising." Kaylee answers, typing away furiously at the keyboard.

"No, it's not. I've always had sensitive ears and-" Jay answers.

"I meant, I think I know how we suddenly appeared on the Destiny's Bounty." Kaylee corrects.

"How?" Cole questions.

"The displacement we experienced was not caused by just any normal energy. It was temporal energy." Zane says.

"Oh, well, temporal energy. Of course. Everyone knows that's, um...powerful." Jay replies. 

"You have no idea what 'temporal' means, do you?" Kai asks.

"I do not." Jay shakes his head.

"It means 'time.'" Lloyd answers.

"Precisely. Whatever created that displacement can warp the very fabric of space-time." Zane answers. 

"Which is powerful, right?" Jay asks.

"Very. All the normal rules of existence no longer apply to such a force." Zane nods.

"Told you it was powerful," Jay answers as Zane puts a plug in his head as he searches.

"Space-time isn't something to be ignored. I can control space, or Chaos and Order, which makes up our very universe, and all of the 16 realms." Kaylee answers, and everyone looks at her. "What? I can read."

Jay sighs. "Okay, yes, there was a little hiccup in time. But just one. I'm sure it was nothing. They probably happen all the time, and we don't realize it. You know, like déjà vu. Can we go home now?" Everyone looks at Jay. "Seriously, we just cleaned up an entire museum! Aren't you guys tired?"

"Well..." Zane starts.

"Well?" Nya questions.

"I've located the surge's epicenter." Pixal answers.

"Where, Pixal?" Zane asks.

The screen shows the monastery before it was burnt down.

"The old monastery." Pixal replies.

"The monastery? That place totally burned down. Why would anyone or anything be up there?" Cole questions.

"We should find out," Lloyd replies.

"Oh, why? Cole's right, there's no reason for anyone to be up at the monastery. Zane's probably malfunctioning." Jay groans.

"Self-diagnostic indicates negative," Zane says.

Jay nudges Zane. "How about now?"

"No."

"I agree with Lloyd. We should go. Where there's smoke, there's usually fire." Kai answers.

"And where there's massive energy displacement, there's usually trouble." Nya nods.

"Well, maybe it's, like, you know, a harmless massive energy displacement." Jay chuckles as everyone soon looked at him. "Come on. Seriously, I'm exhausted. We did our good deed for the day."

"Wait. Master Wu said he was going to the monastery. Something about 'finishing an old fight.' He said this was something he should do alone." Lloyd reminds.

Jay sighs. "What are you waiting for? Get us to the monastery!"

They immediately start moving to get the Bounty to fly. It immediately takes off. Onboard the Bounty, the Ninja look at the destruction of the Monastery. 

"Hey. Has anyone seen Master Wu?" Lloyd questions.

"Hm. I only see that guy." Kaylee points at Acronix.

"Who's that?" Cole asks.

"I don't know. Let's find out." Jay answers.

"No, no, wait, what if...?" Lloyd protests, as Jay kicks a button, letting the anchor lower as he and Kaylee hitch a ride on it. "Hey, Jay, Lee-Lee." 

Kaylee asks Acronix as the anchor lands down. "Ahem. Excuse me, I'm looking for someone."

"Who do you seek, Ninja?" Acronix questions.

"Spinjitzu Master. About yay tall, long beard, goes by the name Wu." Jay answers.

"Haven't seen him." Acronix answers.

"Hm." Kaylee summons her Elemental Rope, as Jay gets out his nunchucks. "That's odd. 'Cause judging by all the slash marks around here, I think you have." Electricity sparks on the nunchucks' chain.

Down on the ground, Jay charges at Acronix as he avoids his attack before they spar a bit before Jay puts away his nunchucks and fires a lightning bolt at Acronix, who uses the Time Blade to block it before he soon disappeared as Jay fired another one, but misses. Acronix soon reappeared behind Jay and strikes him, knocking him forward and into some rubble.

Kaylee charges, using her rope to tie Acronix up, before she repeatedly hits him, until Acronix hits her straight in the chest, and makes her fly into Jay.

Acronix comes up to Jay and Kaylee. "A moment ago, I had no quarrel with you. Unfortunately for you, I do now." He raises the Time Blade.

The other Ninja soon slide down the anchor chain.

"Did you see that? It's like..." Lloyd questions.

"He jumped forward in time." Kai finishes.

Cole speaks as his arms glow. "Yeah? Let's see him jump this!" He jumps off the chain and fires a dirt shot near Acronix. He lands on the ground before charging at him with his glowing fists, but Acronix spins him around and throws him at the others, knocking them down.

"More Ninja?" They all stand up. "Curious."

"Ninja go!" They all do Spinjitzu, but Acronix raises the Time Blade and disappears, reappearing behind them as they all knock into each other and fall to the ground, groaning.

"You only missed me by a few seconds." Acronix taunts.

"Sometimes I wish I was still Samurai X instead of a Ninja." Nya groans.

The Ninja put their hoods on as they face Acronix.

"You're fast." Kai conjures fire from his right hand. "But faster than this?" He throws the flame at Acronix, who dodges and the remains soon start burning.

Acronix chuckles. "Elemental Master of Fire. I've encountered one of you before."

"Huh? You met my father?" Kai gasps. 

Acronix soon uses the Time Blade to disappear. They look around before they hear a sound and see he is on the roof.

"There he is!" Nya points.

"Ninja...Come out and play." Acronix taunts. 

"Jay, Cole, Kai, Kaylee, we get Acronix. Zane, Nya, use your Elemental Powers to put out this fire." Lloyd orders.

"Ninja...Come out and play." Acronix taunts. 

"Hang on. Who put you in charge? Why can't I help with the flames?" Jay questions

"You think lightning is better than water and ice for stopping flames?" Lloyd asks.

"Good point. Let's go!" Jay moves closer and fires a lightning bolt at Acronix, who moves.

Cole jumps onto the roof as his arms glow again. "You got lucky last time." They fight before Cole gets a fist stuck in some rubble. "Darnit." 

"Clumsy. Like a fawn standing on her new legs." Acronix laughs.

"Oh yeah? How's this for clumsy!" Kaylee yells, firing silvery blasts one by one.

Jay jumps in the air. "One!"

Kai jumps in the air. "Two!"

Lloyd jumps in the air. "Three!" They all prepare to fire their powers, as Kaylee and Cole move out of the way. 

They fire them as Acronix starts moving along the roof. At the cliff, Wu still struggles to hold on, but the branch soon snaps. Back atop of the monastery, Nya and Zane try to put the fire out as Kai, Jay, and Lloyd try to hit Acronix as he moves along the roof.

"Yes. Keep moving him back. He's gonna have to surrender, or else the flames are gonna get him." Lloyd orders. 

Cole and Kaylee jump in at times, firing blasts of their powers at Acronix, and dodging the other's powers when needed. 

"Here's Acronix!" They fire their powers at Acronix, who uses the Time Blade to block it as energy starts coming out.

"It's gonna blow!"

The energy blasts, creating a shockwave, knocking everyone back and Acronix quickly disappeared, soon reappearing at the stairs and starts going down them. Back atop the monastery, the fire is still going as the Ninja are laid down while Nya was atop of Jay, who was the first to sit up.

Jay removes his hood. "Ah. Burned down again. Man, this place just cannot catch a break."

Lloyd sits up as he removes his hood to look among the burning rubble. "Neither did Acronix."

Kai sits up and removes his hood. "Good, you know me, I don't back down from a challenge, but I wouldn't want to face that guy again."

Cole sits up, and removes his hood. "No way. He moved at, like, the speed of time."

Lloyd stands up. "Come on, guys, let's get back to the Destiny's Bounty." Lloyd answers.

"Aren't we forgetting why we came here? I forgot as well..." Kaylee asks, pulling off her hood. 

Nya quickly gets up. "But what about Master Wu?"

Lloyd gasps as he realizes and the other Ninja get up. "We gotta find him. Spread out!" They start to move along the burning rubble.

Cole runs along a path to the cliff as the branch Wu is holding onto finally gives way and is about to fall before Cole's glowing hand grabs him.

"Gotta...hang...on." Cole pulls Wu up and he starts panting. "Barely made it." His arms stop glowing.

"Master, are you alright?" Zane questions. 

"I..." Wu stands up. "fear not."

"Why was Acronix here?" Kaylee asks. 

"How did he do that?" Kai asks.

"Why were you fighting him?" Jay questions.

"There is much to tell you. And not much time." Wu croaks.