After they enjoy on school fair day, the Teammates crew, agent of rescue and their Allies friends find that the Destiny bounty is stolen by thieves. They chase after it and encounter the A sins fighter, who plan on stealing the Diamond Necklace cross lullaby from Rainbow heart portal world becoming the worlds greatest fighters. They then encounter the Sinssome evil, a group of dangerous bosses villain with their leader, Peeking duck, who intends on becoming Sins King. After maria, Samantha and sam Are kidnapped, the Teammates crew and friends journey to Rainbow heart portal world and challenge the Sinssome evil to a great battle in Sinssome Castle while kai met his childhood named zapper "zap" robinson, a young half agent and half ninja who join the sins fighter.
The prologue begins with the Teammates crew on the schools fair day. Kai sits on a chair by the Darlyn and Lloyd, on up a music box ballerina lullby, while zane does shooting at the toy solider with fake gun on his hand. Jay lies on chair massage as cole comes up to him, Throw bucket with water onto jat and laughing at him. Emmet and friends runs up and sits down in the floor as Kai,Darlyn and lloyd looks at the Destiny bounty's, noting how cool it is. Sir slicer notices that the Destiny bounty's is starting to sail and fly away, and Emmet and sir slicer freak out. Jake tries to stretch out his arm to reach it but stops short of reaching the bow before his arm retracts then Punches David Jones. The heroes are then left on the golden faith academy yelling at the thief to give back their ship.
The Movie begins with the Heroes are shown cramped on a four small wedding paddle boat to chase the thief wearing clothes for wedding ceremonies as the teammates crew's weapon and Jones's Gun holder were stolen with the Destiny bounty's (except Kai,Karen and friends, who was wearing Their watch with agent and ninja outfit on it while Jones and Rose Wearing their New outfit). They come across a girl struggling in the water, and zane and Suzanne dives in to save her. However it ends up being a trick as all of the Heroes ends up getting captured by a net, lifted up and out of the water. They are brought down on the deck of another ship, where a a heroes in a pilot's uniform stands. He and she introduces themselves as Vlad Vladikoff, twilight, her six friends, Dabura, FLDSMDFR, magic man and Sailor Galaxia as the girl introduces herself as Rebecca "becky" Jones, and they are the Sins fighter. They declare they will become the greatest thieves in the world and steal the stealing the Diamond Necklace cross lullaby from Rainbow heart portal world, which maria explains is one of the greatest artifacts in the world.
Darlyn asks Sailor Galaxia about the Destiny bounty, which she replies was taken by the sinssome evil. She shows the wanted posters of The Regurgitator,Maja the Sky Witch, Drill Sergeant, Lord mitch, Chester V and Peeking Duck to them. They then find a fleet of ships coming toward them, the fleet of the Sinssome evil. In the crow's nest of one of the ships is Maja completely swimsuit taking a bath. The Regurgitator then jumps out and declares that their leader, Peeking duck, will become the Sins King. The Regurgitator and maja order an attack, so the employees of the Sinssome evil start leaping down to attack the Heroes. The heroes manage to fight them off, but The Regurgitator himself leaps down, curling up and becoming a big spiky tornado.
Kai, jay, zane, cole, Lloyd and darlyn use their watch to switch their clothes into zx suit and places their watches on Samantha's arms as they gets ready to fight. Slicer declares his plan, "Running is Winning", and has their boat flee from the Sinssome evil' fleet. In the chaos, the Sins fighter lose a small box, so Sunset shimmer leaps into the water after it as becky whacks sir slicer in the head to stop him. Sunset shimmer retrieves the small box, but Maja arrives, standing on the back of The Regurgitator in the water, and The Regurgitator hurls bombs at the boat, blowing it apart. The Regurgitator and Maja kidnap maria, sam and Samantha, as she is a great sins people, and throw another bomb to make their getaway. Darlyn and lloyd sinks below the ocean's surface, but cole manages to retrieve them.
The remaining The teammtes crew and the agent of rescue huddle aboard the wreckage with the sins fighter, with Sailor Galaxia deploying a parachute as a makeshift sail. Cole blames Sailor Galaxia's going after the music box for the reason three girls was kidnapped, but Sailor Galaxia explains that it is the only thing Becky has left of their hometown. A brief flashback shows how when Sailor Galaxia and her gang found Becky, the lullaby of the music box with a note and names was all that could calm hier down. Darlyn asks if that means they are not families, but Sailor Galaxia replies that they are families even if not through blood. As they sail along, jay spots a whirlpool, and Sailor Galaxia says that it means they are coming close to Rainbow heart portal world. On Rainbow heart portal world, in a great castle, peeking duck sits on his throne while two orphan keeper explain the situation to him. They say the weapon of mass destruction he is having them build has spilled too much blood, but Peeking duck does not care and orders them back to work, as he will need the weapon to conquer the seas and become Sins King. The Regurgitator and Maja come into the room carrying three girls, and Drill Sergeant looks all over girls creepily. Peeking duck asks if the girls will be his bride, and they glares at him, so Peeking duck says that girls is his type. Samantha tells Peeking duck that they cannot stand feathered men, so he offers to shave, but then says that sam hates weak men more, doubting that Peeking duck could beat Kai. Mitch and Maja show Peeking duck the wanted poster of kai's childhood neighborhood named zapper "zap" robinson and Mitch says that zane must be with him too. Peeking duck declares that he will kill zapper and kai and use his bounty to fund his wedding with girls, on nighttime The Wizard of the Waste, who romantically pursues Gems, visits the sinssome evil only to be refused service by Samantha. The Wizard exacts revenge by cursing Samantha, transforming her into a ninety-year old woman. Seeking a cure for the transformation spell, meanwhile kai is sleeping, a dream start, Before on Kai's past, he and karen was only 8 year old and meet a boy named zapper who gave him a music box ballarina lullaby to him he is playing with his childhood it and the their parent and scold their children for not meeting a stranger. Kai cries, and flashes on the present, kai wake up on his dream.
Meanwhile, the remaining The teammates crew, agent of the rescue, sins fighter and friends arrive on Rainbow heart portal world, and immediately start heading up the winding stairs to the town that is at the top. The way is laden with traps, though, and the stairs turn to a ramp as they start to slide down, water rushing toward them. Jake grabs on and uses his Strech powers to stop them from being skewered upon spikes, and as boulders come rolling toward them cole leaps from wall to wall, kicking them away. Zane reaches down and tears up the floor so that they can walk up the path to the top. They arrive at Rainbow heart Town, a fun place with windmills everywhere, and a large tower, Sinssome Castle, is in the center. At the top of the tower jay can spot the Destiny bounty's. The four decide they will get new clothes for thier friends and grab a bite to eat before rescuing Girls, much to Sailor Galaxia's shock.
Karen, bella and sarah get new clothes for them that are much easier to move in, and the group heads into a sort of shop. Darlyn and Lloyd says Clockwork Town is fun, but the two orphan keaper at the shop disagree. They explain that they created the Diamond Necklace cross lullaby, but ever since, they have been suffering since the Sinssome evil arrived. Ever since, they have been creating killing weapons instead. Sailor Galaxia declares that the Teammates crew will defeat the Sinssome evil, but they object, as they have not agreed to anything yet. Jay says Sailor Galaxia just wants this because the Diamond Necklace cross lullaby will be easier to steal without the Sinssome evil around. The orpphan keeper say it will probably be better if the Diamond Necklace cross lullaby is taken away and Kai met his childhood neighborhood. Darlyn then says that you cannot make a fortune without risking your life, so they decide to set out. As the group leaves and zapper join them, the orphan keeper find a music box on the ground, realizing that the was Becky has her real names: Rebecca jones.
In Sinssome evil Castle, Three girl was washed on spa by sinssome evil. Maja and chester gets up and walks away, dropping off maja's cape and his vest and turning into water and blood as she slides into a pipe. The Regurgitator decides to go too, wheeling off down a rope. Outside, The heroes are hauled up in a small basket along a rope, high above Rainbow heart Town, toward Sinssome Castle. Kai notes that the music box ballarina lullaby house sing look just like his music box ballarina lullaby, and he takes it out and finds it is broken. Becky quickly fixes it. Suddenly, Maja and chester forms before them, and The Regurgitator arrives as well, tossing their cape and vest to them.
Maja and chester declares she has eaten the 100 lives gems, and so The Regurgitator throws balls at them. Cole give Manolo With his power, Manolo leaps out to kick him away, but spikes protrude from The Regurgitator's ball, piercing right through Manolo's foot. Manolo cries out in pain as he starts to fall. zapper catches him with Joaquín only to drop them when Maja and chester floods their airship. Manolo and Joaquín then falls and hits the ground, hard. A mine then nearly blows Manolo and Joaquín up. He is then quickly tied up by Maja, chester and The Regurgitator and brought to Sinssome Castle. Manolo and Joaquín is dumped before Peaking duck and meria, and Peeking duck says he did not kill Manolo and Joaquín because he is Maria's boyfriend. Maria proceeds to deny caring for him anymore. Peeking duck then sends Drill Sergeant to get rid of the rest of the crew.
Meanwhile, at the gate to Sinssome Castle, the group, minus Manolo and Joaquín, Sailor Galaxia has arrived and becky goes on about how if they was captured, Sailor Galaxi would save him no matter what, and the others see that Sailor Galaxi has a metal hand. This irritates flint, who says that it does not matter at sea, and how he hates people who depend on others to save them. The teammates crew then says it's time to get going, and he tells becky to stay behind if he's afraid. Kai uses Fire element Pistol to knock down the door, and he charges in, but is quickly mobbed by a huge group of employees. Zane runs in after him to help. Meanwhile, back in Sinssome Castle, Mitch notes how zane finally arrived.
Suddenly several employees, formerly under Chester's female employee, arrive with the King Cannon, which is now completed. They dance, proclaiming about how much better PeeKing duck is than Chester's female employee. Manolo and Joaquín apologizes to maria about how he could not do anything because he wanted to use only his own strength to show off to her. Peeking king interrupts, demanding what Manolo and Joaquín 's relationship with their "fiance" is, and Manolo and Joaquín replies that they "rubbed suntan lotion on her smooth skin". This makes Peeking duck angry, and after beating Manolo and Joaquín up declares that he will have Manolo and Joaquín crucified.
Down below, The heroes fight through the pirates when Drill Sergeant arrives, standing on a tall pole. He points them toward Manolo and Joaquín, who is hanging from a cross up high outside the castle, and so he unleashes a cloud of poison fog, gas that will make those who inhale it paralyzed. As Their strength start to fail, flint turns to becky, declaring how brave he can truly be. Flint scales the pole and grabs Drill Sergeant around the legs, holding the flap that releases the fog shut, yelling for the others to go on ahead. Drill Sergeant becomes furious, trying to shake flint off, and Flint has to put his mouth over the fog release to keep the fog from coming out. The others see Flint's diversion and so they rush on ahead as Drill Sergeant launches into the air with flint along. He lands on the balcony of Sinssome Castle, and flint collapses, filled with the poisonous fog. Peeking duck King declares that flint will be crucified as well, and he is put up on a cross beside Manolo and Joaquín as sam looks on in despair.
The heroes rush up the stairs of the castle, fighting through the enemy employee, but as they near the top they come to a chamber where the floor and ceiling close in on them. The teammates crew and agent of the rescue struggle to hold it up as becky is knocked out, and zapper takes becky to safety. The sins fighters reveals that they was the one to steal the Destiny bounty, as she wanted to bring the Teammates crew, agent of rescue to Rainbow heart Portal world. Zane blames it on sailor Galaxia's greed for the Diamond Necklace cross lullaby, but The sins fighter replies that they wanted the Sinssome evil defeated so the island could be free and becky could meet her family, as Rainbow heart portal world is his home.
The sins fighter kidnap zapper and rushes ahead to face the sinssome evil, leaving The heroes to their fate. Mitch then arrives, drawing his sword and saying how eren gave him the scar he has across his face. Eren replies that he does not remember mitch, so Mitch becomes angry, using Sword of Arrows to stick eren full of needles. eren falls to one knee, as the needles were tipped with Drill Sergeant's poison. Eren tells Luffy to hold on a little longer as he draws his sword and charges at Mitch, but a fence comes up in front of Mitch, causing eren to only slash it instead. Mitch jabs his sword through the fence, getting eren in the midsection, and so he carries away the injured Eren on the lift, where he is brought to Peeking duck to be crucified.
At the top floor of the castle, The four boys hang bound to crosses as Peeking duck readies to King Cannon to blow them all apart. He says that Samantha must be overjoyed, but Samantha aims a kick at Peeking duck, snapping how she'd rather die with her friends then marry him. Peeking duck strikes her across the face, saying it can be arranged, and so Samantha is set up to be killed as well. Down below, becky wakes up to see the heroes struggling under the ceiling, asking where her friends went. Kai explains sins fighter went to fight the Sinssome evil, so becky runs up the stairs after the sins fighter, much to Their dismay. Meanwhile, Peeking duck fires up the King Cannon, but before he can fire, a large metal wall comes up, with sailor Galaxia standing before it. Zapper walks forward with dynamite strapped to his midsection, and Dabura holds a lighter to the dynamite zapper, ready to sacrifice himself for the world. Peeking duck only laughs, stepping forward as he says that detonating the dynamite will only destroy the island's key, which is below his feet, within the castle. If the island key is destroyed, the whole island will be destroyed as well.
Before zapper can react, Peeking duck starts tossing him around like a rag doll, knocking the dynamite off of him. Becky tries in vain to help her friend. As zapper hits the floor, Mitch picks him up angrily after zapper corrects him on a misspoken word (Mitch misspeaks many times throughout the movie). Becky then tries to defend her boyfriend. Meanwhile down below, kai sees that his childhood lullaby music box ballarina, which becky kept after fixing it, is broken, so with great fury he pushes up the ceiling, forcing himself , his adoptive brother and sister and his friends up and through the floor of the throne room where the Sinssome evil are.
As everyone gapes in shock expect zapper and becky, Kai, zapper and becky picks up a stick of dynamite, notes how cool it is, and lights it. Everyone freaks out for kai to throw it away, so Kai,zapper and becky tosses it to the iron wall in front of four mans. It blows the iron wall to pieces, and they asks where thier friends are, which the Sins fighter reply to that they just blew them up. However, Four guys emerge from the smoke, albeit somewhat battered.
With the four now free, the Sinssome evil burst into action. Drill Sergeant chases flint up to the roof of the castle, while jay tries to save flint and sam and The Regurgitator square off, Manolo, Joaquín and The Regurgitator laughs that manolo will not be able to kick him with his bleeding feet. Jay tosses down Cole's weapon to him, and cole puts them on, but The Regurgitator refuses to believe they will make a difference. Jay shoots Drill Sergeant in the face with a Sure Kill Pepper spray Star, and as Drill Sergeant goes down he tosses Zane's weapon swords down to him. Zane catches them and barely blocks Mitch's sword, who took a stab at his back. Zane stands in front of eren snd Samantha, defending them. Peeking duck and kai begin their fight, as kai uses Fire fist punches, but finds it has no effect. Peeking duck declares that his body is as strong as steel because he ate the 300 lives.
The Regurgitator curls up into a ball and charges at cole, but cole sends him careening into the roof with one kick. Cole leaps up and proceeds to kick Regurgitator, several more times until he drives Regurgitator down through the floor, into the island key chamber. He again drives Regurgitator into the ground, and cole stands victorious, flicking away the sharped glass, as the Regurgitator lies in a bloody heap. On the balcony, zane tears off his sleeves and shirt, assuming his three weapon stance, and he charges at Mitch. Drill Sergeant declares to jay the power of his poison fog and he charges at them as flint pretends to be frightened and jay tries to find the secret weapon. At the last second jay fires his lighting strike shot star, striking Drill Sergeant and causing a big explosion. Flint and sam escape into the water, while jay falls back into the pool below while Drill Sergeant is sent flying off into oblivion. Floating in the water, jay yells that Drill Sergeant got what was coming to him. Kai uses Fire slice whip on Peeking duck, but gets all tangled up and is knocked to the floor.
Zane and Mitch trade sword swings, engaging in a fierce duel. Mitch uses Sword of Arrows once more, but zane blows them back with his weapon. He stands back up, and Mitch says how he shouldn't be able to stand with all of the poison in his body. Zane replies that he cannot fall, because he faces a long journey and there is one man at the end of it for him to beat. Zane then uses Ice slash and takes Mitch down. Upon seeing the defeat that the other Sinsome evil endured, Maja and chester flees, dropping their cape and vest and becoming water and blood again, heading into a pipe, but darlyn grabs the pipe and pours Maja and chester into a two jar, which lloyd and darlyn screws shut and holds down.
Meanwhile, the fight between kai and Peeking duck continues as Peeking duck's arm lights with fire acid. Kai grabs onto it but is singed. Peeking duck starts pounding kai around, but zapper fires a missile from the King Cannon at peeking duck for killing his childhood. Peeking duck is barely able to avoid it as it smashes through the window and flies out into the sky, landing in the water with a great explosion. Zapper says that his next shot will not miss.
Peeking duck becomes furious that zapper is using his cannon, so he pulls a gun and fires it at him. Becky leaps in the way and is shot in the chest, falling to the ground. Kai becomes furious and throws Peeking duck through the wall, causing the entire top tower to tip and water to pour down. Peeking duck emerges, more furious than ever, and he climbs onto the King Cannon and fires it at kai. Kai catches the missile with his chain fire, twisting his power around and Strech fire chain way out into the sky, and so he pulls it back in, using Elements fire Screw to drive the missile right into Peeking duck's chest. Peeking duck is driven through the floor and lands in the island key chamber, where there is a great explosion and the island key is destroyed.
Emmet tosses Their clothes back to them as congratulations for defeating Peeking duck. Zapper kneels beside becky and sees that Becky's chest was protected by a sheet of metal under her shirt. As zapper carries becky to safety, the Diamond Necklace cross lullaby starts chiming. All of the Heroes and zapper and the sins fighters as well as becky recognize the sound as Rebecca's music box. It is then revealed that the two orphan keapers they had met earlier were Rebecca's parents.
The two friends head back down out of the castle to the townspeople of Rainbow heart Town, and meet the two orphan keeper from before again. The orphan keaper explain that becky was her real named Rebecca is their daughter, and a brief flashback shows the mother putting Rebecca into the water, hoping that she will escape and survive.
With the key destroyed, the entire island starts to collapse, and the Destiny bounty falls from it and into the ocean. The people of the island land in the water and scramble into the boats as their island is completely gone, but they know it could not be helped and that they will rebuild a new island and a new future. On board one of the ships, Rebecca is reunited with her parents, the two scientists from before, and she hugs her mom laura. As the Teammates crew sail in the Destiny bounty alongside zapper in the small ship, Sailor galaxia says that Rebecca's parents are great people and that he's better off. The former Wizard of the Waste discovers it and promptly destroys the bug by tossing it into Calcifer, who then becomes sick and weak by peeking duck, rendering him unable to protect the gems from being discovered and Eren to keep his wife and child and have a future with His family. Samantha looks relatively the same despite being forty years old with white short hair and yellow strip hair, but Zapper rapidly ages into an old man. Revealing his actual age, Zapper accompanies His friends to Times Square
20 weeks later, zapper is married Rebecca and they have their two children: son and daughter named Jacob and Isabelle, where Zapper reminisces about his life. As the sun rises, he disintegrates into ash, which land on new island called loveville island, after he banished wizard of the waste into the portal.
In epilogue A few years later, The teamamtes crew, the agent of rescue, the male agent of rescue and lover teammtes crew show up at Their school to pick up kai's and angela's old son and jay's and nya's nephew, whom names after zapper. As Garmadon, wu, Misako, emma, tom and mai prank with ninjago children, they notices that the little boy sports a set of mask of fire ghost face.