"how long has he been underwater?" Aria asks

"A long time" Kai replies

"If he drowns do we have to pull his dead body up or will it float up?" Aria asks

"What kind of question is that? He's fine" Cole replies

After awhile longer Zane surfaces and the ninja all cheer

"Amazing!" Cole shouts

"We're not worthy" Jay says falling to his knees and Aria laughs

"I broke the record?" Zane questions

"You destroyed it!" Kai replies

"Okay, okay. Is anyone thinking what I'm thinking? We've been training for so long, I don't think we can get any better. Just think about all we've accomplished" Jay says

"And yet none of you have unlocked our true potential" Aria comments

"We have all made a lot accomplishments these past couple months, I wonder if we've reached our full potential yet?" Zane questions as they head inside the Destiny's Bounty to find Wu "Well, every morning I do five hundred push-ups"

"Five hundred? Ha, try a thousand" Kai brags

Jay laughs "Hahaha, I do a thousand and one"

"Pfft, amateur hour" Aria crosses her arms

Cole laughs "Sounds like my warm-up. Sensei, what does True Potential look like if-"

They see Master Wu putting away a katana.

"Sorry we interrupted you Sensei" Aria apologizes

Wu sighs "I'm sorry if I've been distant lately. My mind has been elsewhere since Lloyd has gone missing. What can I help you with?"

"Sensei, what if we've done enough training? What if we've reached our True Potential? What if we're ready?" Cole asks

"Hm. You might have reached peak physical condition, but you've yet to reach your inner potential. In each and every one of us, there are obstacles that hold us back. Only when you conquer that fear will your heart be free. Only then will you reach your True Potential. Only then will we have a fighting chance to stop the Serpentine from releasing the Great Devourer" Wu answers

"There's more to the Great Devourer than you've led on, isn't there, Sensei?" Zane questions

"when I was younger me and my brother were the best of friends. One day while we were practicing our skills, I lost my katana, and my older brother sought to find it, knowing our father would not be pleased. Garmadon found the katana after clambering over the wall, however, he was bitten by a small green snake. In the following days after, Garmadon developed an increasingly darker nature, thanks to the snake bite that was from a legendary snake, the Great Devourer." Wu told them

"And their's no known cure" Aria says sadly

"we cannot change the past, we can only look to the future. That said, I am going on a journey, alone" Wu says

"what no" Aria holds onto his arm

"It must be done" Wu says patting Aria's head "it is a place you cannot follow"

"Why not?" Aria asks

"Just trust me Aria," Wu smiles to her "I am doing this for Lloyd, and for you."

"For me?" Aria looks confused

The Ninja are all taken aback, but they and Nya oblige, dropping Wu off at a nearby mountain. Afterwards, the Ninja decide to go to Jamanakai Village to post signs about the missing Fangblades. As Zane is posting signs, he sees the Falcon.

The Ninja travel through different terrains to reach the Falcon's destination. Eventually Jay, Cole and Kai become too tired to go on while Zane and Aria proceed into a frosted forest.

Zane looked up at the falcon "Where are we going, my mysterious friend?"

The Falcon falls from the sky and twitches, with sparks coming out of it.

"Is it ok?" Aria asks as they approached it

"You're a...a robot?" Zane says surprised before he puts the Falcon next to a tree and sees a robot.

"Intruder! Intruder! Prepare to be terminated!" The robot shouts and Aria hid behind Zane

"Ninja, go!" Zane uses spinjitzu and partially buries the Juggernaut with snow.

"Intruder! Intruder! Prepare to be terminated!" It shouts

Zane disables it and sees the same symbol on it that was on the Falcon "The same symbol. Where have you brought me, my Falcon friend?" He spots another symbol on a tree and opens it, revealing the Hidden Workshop "So, this is your home, my mysterious friend"

"I-Is it safe?" Aria questions shivering from the cold

"It should be" Zane replies taking her hand "come, it should be warmer for you in here"

While searching through the building, he finds a blueprints for the falcon. He uses the blueprint to fix the bird. "You brought me here, but why?" He pulls out another blueprint from under the Falcon's. "No! It can't be. No! Noooo!"

Aria ran over to him "Zane what's wrong" Aria gasped when she saw the blue print

"I am not..." Zane shook his head in disbelief

The rest of the Ninja arrive and find Zane on his knees with Aria kneeling beside him.

"What's wrong?" Kai asks

Zane stood up and opened up his torso, he's a robot "All this time, and I never knew"

"Uh, guess this explains why you're always acting so weird. Right? Hehe" Jay laughs nervously

Zane shook his head "The reason I never had a sense of humor was because my funny switch wasn't on"

He turns it on and starts singing and dancing stupidly "Hello, my baby. Hello, my honey. Hello, my ragtime gal. Send me a kiss by wire"

Jay and Aria laugh while Zane turns the funny switch off and sighs.

"Uh, it just makes you more special. You're still the same Zane. Just more, uh, gears" Cole tries to comfort him

Kai put his arm around Zane "No matter what you're made of, you're still our brother"

"Really?" Zane asks

"Of course you are, why would this change anything" Aria says "You're still Zane"

Jay smiled "Yeah, and how cool is it that I can honestly say My brother is a Nindroid?"

"A Nindroid?" Zane questions confused then sighs "Thank you guys, but I wish to be left alone right now"

"Come on Aria" Kai says taking Aria's hand and leading her out of the workshop with them

They are soon attacked by Treehorns. They dodge their attacks at first, but are unable to defeat them and are quickly subdued.

In the workshop, Zane takes another look at his blueprints and, realizing he has a Memory switch, flips the switch on. He remembers his father, Dr. Julien, and the different things he taught him over the years.

His father explains to Zane that he was built to protect others, and wishing to save his son the pain of heartbreak, turns off his Memory switch before passing away of old age. Zane, having regained his memories, sheds a tear for his father.

"ZANE" he heard Aria yell

Zane rushed out "Leave my friends alone! Ninja, go!"

He quickly rusher out to help his friends. Together they defeat the Treehorns, but things take a turn for the worse when the Queen arrives. Zane backs down a bit.

"Zane listen to me, you're not just a robot you're our friend, our brother, our family. All families are different, our family is very different and we come from different places but that's what makes our family so special, it's what makes us a family" Aria said

Zane smiles and turns to the queen treehorn "You will not hurt my friends. There is nothing that will hold me back. I know who I am" Zane starts to turn light blue

"What's happening to him? Was he programmed to do that?" Kai questions confused

"I've never seen a robot do that" Jay says

"Zane's unlocked his True Potential" Aria says happily

Zane freezes the queen and falls "What happened?"

The ninja cheer and rush over to him.

"That was awesome!" Jay shouts

"You should've seen yourself" Kai says

Cole smiles "Heh, I've never seen anything like it"

"This must be what Sensei meant by unlocking our hearts. I remember now. I remember everything. I remember my father and how he cared for me. I remember where I came from. And I feel stronger for knowing" Zane says "I may not have my father anymore, but I still have my family. Thank you Aria"

Aria smiles and hugs him "I'm so happy for you Zane"

"We have our very own Nindroid!" Jay shouts excitedly and everyone cheers.

"Watch out, Pythor. We're coming to get you" Zane says

Aria walked over to the frozen treehorn and stares at it. Kai walked over to her and waved his hand in front of her face. She blinked a couple times and looked at him.

"W-what?" She asks

"You were staring off" Kai tells her

"Sorry" Aria apologizes "It's just sad.. I think the mother was trying to protect it's babies."

"Aria.." Kai says sadly

Aria shakes her head and walks back over to the other ninja.

Kai sighs "I wish I could help you kiddo, I really do."