AsLloyd's group tends to an injuredNya,Ultra Violetand theSons of Garmadonsurround and attack them. As they're being overpowered, a portal opens in the sky, andWuandtheNinjareturn on their newfoundDragons.
They see the city's state and wonder where their friends are as Nya contacts Kai to tell them that they need help. Zane tracks the frequency and the ninja regroup with the others and attack the Sons of Garmadon,
Dareth and Nya are happy to see the ninja back with dragon power while Lloyd is excited they held out to reunite with the others. The Sons of Garmadon are scared by the dragons and run off but Zane'sIce Dragonfreezes many of them in place while the other dragons dispatch the remainder.
Firstbourne lands as Wu dismounts from her, Lloyd and Nya are amazed to see Wu has aged back into an adult and he voices his support in defeating his brother.
The group plans a final fight againstLord Garmadon; Wu and Lloyd intend to face him, while the Ninja evacuate the remaining citizens in the area. These acts cause the people to see their protectors have returned.
Dareth even becomes recognized as such when he comes across reporter Gayle Gossip and her cameraman being harassed by the Sons of Garmadon.
Dareth stops to help but is taunted by the villains who advance on him as he charges at them but slips on a rock and ironically takes them down, saving the civilians. He leaves while Gossip is left fawning over him for the rescue.
InKryptarium Prison, a grunt from the Sons of Garmadon informs his comrades that the Ninja have returned to Ninjago. Overhearing this, the imprisoned civilians and Elemental Masters regain hope and desire to help the ninja.
They start shouting "The resistance never quits." since they are now inspired to break free. Ronin, Karlof, and Griffin Turner cause a riot in the prison before releasing their friends from the cells.
Back in Ninjago, Wu and Lloyd fly the Firstbourne toBorg Tower, whileCole,Kai,JayandZanefly their Dragons. Wu and Lloyd search for Garmadon, who suddenly appears and starts fighting them. Lloyd is overpowered, while Wu continues fighting against his brother using theirfather's sword.
Wu condemns him for his actions on the city, as Garmadon ignores him and says Wu can't stop him as the latter agrees by saying he can hold him.
At that moment, Firstbourne intervenes and encases Garmadon in molten rock - however, he breaks free, and unleashes a shockwave ofdestructiveenergy. Wu is flung from the tower, though is saved by the Firstbourne. Lloyd is left to face his father alone.
The Ninja continue fighting against the Colossus, using Vengestone Chains to try and incapacitate it. However, the chains are ineffective, and they eventually run out of them. Kai jumps onto the Colossus and begins binding the chains together even tighter.
On the tower, Garmadon continues fighting his son. Lloyd tries urging his father to change his ways, but his corrupted soul has no redemption in sight; he proclaims that people don't change, they only reveal who they truly are.
In the city, the Ninja run out of chains and wonder what to do before Firstbourne returns and Wu fires his chain gun at the behemoth as the Ninjas' allies return to the city to help defeat the Colossus. They bring it to its knees, ending the threat.
Back at the tower, Lloyd is flung to a side of the tower, as he stands up he hears crying and looks over to see the dark bubble Aria is encased in, she looks about 14 now.
"Aria" Lloyd said running over to the bubble
Aria looks up and Lloyd put his hand on the bubble where she put her hand where his is.
"Lloyd I'm scared get me out please" she cried
"Shh it's ok Aria, i promise your going to be ok" Lloyd said trying to calm her down, he can see Aria's fear strengthening the bubble
He heard Garmadon's evil laugh "you can't get her out it's impossible"
"Actually i don't think I need her anymore" Garmadon said as the bubble started shrinking
"No stop! Aria!" Lloyd said hitting the bubble
Lloyd stopped and looked at his dad, he realizes he's unable to defeat his father, who is only empowered by their fight and he uses one of hisfather's lessonsto resist him—by avoiding Garmadon's blows, he fightswithout fighting.
As Lloyd uses the tactic, the Ninja and their allies incapacitate the Colossus using the chains, and it falls to the ground. Garmadon tries shooting blasts of destructive energy, but is soon unable to—as his power vanishes, Lloyd'sElementis finallyrestored. As a result, the Colossus crumbles apart and the dark bubble is destroyed.
Defeated, Garmadon tells his son to finish him off, Lloyd looks at Aria who is covering her eyes, Lloyd shook his head and refuses to.
Garmadon ominously states that it's not over, but it will be when "they" come, and nothing will be left. Following the battle, theSons of Garmadon are arrested, along with Lord Garmadon, as Ninjago is free from his reign.
Several days later, the Ninja clean up theRoyal Palacebefore Wu tellsthem there's trouble. The Ninja run out of the palace and find a crowd congratulating their victory. As thePolice Commissionerstates that the citizens wanted to personally thank the Ninja for saving the day.
As the heroes celebrate, Nya invites Skylor, Dareth and P.I.X.A.L. up since they also made it possible to save the city. The celebration goes on, as Cole dines on cake while the others Nya and Jay, Zane andP.I.X.A.L., as well as Kai andSkylor, share a loving reunion.
Aria runs up to Lloyd hugging him tightly. Lloyd wraped his arms around her waist, she didn't seem short. She was the perfect hight, up to his shoulders like she usually is.
"Hey your 16" Lloyd said happily looking at her
"How'd you figure that out" Aria said sarcastically
"Your chest is the right side" Lloyd laughed
Aria's face turned red and she slapped him "keep it PG pervert"
"Worth it" Lloyd laughed
"Im back to normal, now I'm legally allowed to do this" Aria said pulling Lloyd down into a kiss as the other ninjas smiled and clapped making the couple blush in embarrassment.
Later that night, Lloyd finds Wu on the palace's roof, saying "goodbye" to Firstbourne before she returns to the First Realm. Lloyd is unnerved by Garmadon's warning, and wonders if the Oni truly are coming.
"Lloyd!" they heard Aria shout
Wu chuckled "for now, just think of how much trouble your going to be in"
"What?" Lloyd questioned then looked over to see all the ninjas backing a bit away from Aria who looks mad.
Lloyd went down and the ninjas all watched "what?"
Aria cracked her knuckles "now who's this bitch you were attracted to while i was gone"
Lloyd looked at the ninjas "i said not to tell her!"
The ninjas and Wu laughed as Aria tackled Lloyd to the ground yelling things and Lloyd saying sorry over and over
Lloyd finally calmed her down and they stood up.
"Aria, I love you not her, i don't need anyone else but you kitten" Lloyd said sweetly, Aria blushed at his nickname for her. Lloyd put his hands on her waist and pulled her into a kiss.
They heard the click of a camera and turned to look
"JAY" Lloyd and Aria shouted, Jay quickly ran with Lloyd and Aria following him.
"Give us the picture!"
"No way, guys help me!"
"No way"
"Your on your own"
"Your problem"
"Ah no Aria! Purple fire! Purple fire!" The ninjas laughed. Their story isn't over just yet.