The Turtles get into another battle with their enemy the Shredder, who has acquired new allies: the mutant thugs Bebop and Rocksteady and the alien being Krang.
The Turtles continue to live in the shadows and no one knows they were the ones who took down Shredder. Vernon is the one everyone thinks is the one who took Shredder down. April O'Neill does some snooping and learns a scientist named Baxter Stockman is working for Shredder. He plans to break him out while he's bringing transported. April tells the turtles, who try to stop it but can't. Stockman tries to teleport Shredder but he some how ends up in another dimension and meets a warlord named Krang who instructs Shredder to assemble a teleportation device he sent to Earth a long time ago. He gives Shredder some mutagen which he uses to transform two criminals who were also in the transport with him, Rock Steady and Bebop, into mutants. They then set out to find the device. April saw the transformation while investigating Stockman. She takes the mutagen and is chased by Shredder's minions, the Foot Clan. She is saved by a man named Casey Jones who was the one transporting Shredder. The Turtles show up and they try to work together. In the melee, the mutagen ends up with the police. Knowing Shredder will try and get it back, April tries to get it first and she asks Vern to help. Eventually she and Casey are arrested. The Turtles get the mutagen and Donatello analyzes it, learns it could make them human, which he tells Leonardo who tells him to forget it and not to tell the others. But Michelangelo tells Raphael who feels that Leonardo doesn't respect them.—[email protected]
Two years after their battle with Shredder and Eric Sacks, the Teenage Mutant Ninja Turtles, Leonardo, Donatello, Raphael, and Michelangelo, still live beneath the sewers of New York City, having allowed Vern Fenwick to take the credit for Shredder's defeat. At Grand Central Station, April O'Neil discovers and informs the turtles that scientist Baxter Stockman is working for Shredder and plans to bust him out of prison. As Shredder is transferred between prisons alongside criminals Bebop and Rocksteady by corrections officer Casey Jones, the Foot Clan attack the convoy transporting them. Despite the turtles' interference, Shredder escapes when Stockman uses a teleportation device. Shredder is hijacked mid port, winds up in another dimension, and meets the alien warlord Krang, who reveals his plans to invade Earth..
An old enemy returns to try to take full control of the city. Everyone must work together in order to defeat the enemy and rescue their city and everyone while facing the everyday obstacles of their lives that may change after learning the truth about the enemy.—RECB3
One year after their battle with Shredder, the Teenage Mutant Ninja Turtles, Leonardo (Leader), Donatello (Brains), Raphael (Muscle), and Michelangelo (Pizza lover), still live beneath the sewers, having allowed Vern Fenwick (Will Arnett) (a journalist) to take the credit for Shredder's (Brian Tee) defeat.
April O'Neil (Megan Fox) discovers that a scientist named Baxter Stockman (Tyler Perry) is working for Shredder and that he plans to help Shredder escape from prison. April informs the turtles about this. As Shredder is transferred between prisons with two criminals alongside him, Bebop and Rocksteady, by corrections officer Casey Jones (Stephen Amell), the Foot Clan attack the convoy transporting him. Despite the turtles interference, Shredder escapes when Stockman uses a teleportation device. But Shredder is hijacked mid-Teleport and winds up in another dimension. There, he meets the alien warlord Krang, who tells him about his plans to invade Earth and gives him a Mutagenic compound in exchange for his promise to find three components of a machine that Krang sent to Earth long ago, which will open a portal to his dimension when united, and he knows that Shredder and Stockman have the first piece. Krang gives Shredder a mutagen to take care of the turtles.At the NYPD Casey tells the chief what happened but the chief doesn't believe him. he decides to go out on his own.
Shredder returns to New York City and recruits Bebop and Rocksteady, who also escaped, and has Stockman use Krang's mutagen to transform them into powerful animal mutants-a humanoid warthog and rhinoceros. April witnesses their transformation and is able to steal the vial of mutagen. Pursued by the Foot, she is rescued by Casey, who uses hockey gear. In the ensuing battle, the vial of mutagen is taken into police custody. April then introduces Casey to the turtles, and Raphael and Michelangelo make fun of him and pull pranks on him.
In the lair, Donatello deduces that the mutagen could be used to turn the turtles into humans, enabling them to live normal lives above ground, but Leonardo refuses and insists on keeping it a secret from the others. However, Michelangelo overhears their conversation and tells Raphael, which enrages Raphael and leading to a fierce argument between the brothers. Leonardo benches Raphael and takes Michelangelo off the mission. In the National Museum in New York, Shredder, Bebop, and Rocksteady are able to find the second piece and steal it, before Leonardo and Donatello arrive.Still furious, Raphael recruits Michelangelo, April, Casey, and Vern to break into the NYPD police headquarters and retrieve the mutagen. Vern distracts the police, while April and Casey retrieve the mutagen, but the Foot arrive ahead of them. In the ensuing battle, the turtles existence is revealed to the police, who react with fear and hatred. April and Casey intervene and help the brothers escape, but April and Casey are arrested. The police also see on TCRI's cameras that April stole the mutagen, however Stockman edits the tape so that Bebop and Rocksteady's mutations aren't seen.
With Shredder's forces having already recovered two pieces of the device, the turtles track Bebop and Rocksteady as they recover the final piece in the rain-forests of Manaus, Brazil. The turtles confront Bebop and Rocksteady in their jet and in the ensuing battle, the jet is destroyed. After the Turtles battle with Bebop in a river for control of the piece, Rocksteady emerges in a tank and helps Bebop escape with the piece. The turtles return to New York as Shredder and Stockman complete the portal device and open the gateway to Krang's dimension, through which his modular war machine, the Technodrome, begins to emerge. Shredder betrays Stockman and has his men take him away to their headquarters in Tokyo, but upon entering the Technodrome, Krang immediately betrays Shredder, freezing him and locking him away with his collection of other defeated foes.
Seeing no way to reach the Technodrome with the police pursuing them, the turtles debate over taking the mutagen in order to become humans and fight openly. Though Leonardo agrees to do it, Raphael shatters the vial, realizing they must accept who they are. Upon April's request, Vern recovers security footage from TCRI that proves Stockman's and Shredder's complicity and secures April and Casey's release, allowing them to set up a meeting between the turtles and police chief Rebecca Vincent, where they convince her that they are not enemies and that they were the ones who took down Shredder in the first place. With the help of the police, the turtles are able to confront Krang aboard the still-assembling Technodrome. Although Krang is able to overpower all 4 turtles easily, the Turtles manage to defeat him when Donatello short circuits Krang's robotic body. Meanwhile, Casey keeps Bebop and Rocksteady busy and defeats them by locking them in a crate full of grenades, while April and Vern defeat Shredder's lieutenant Karai and take control of the portal device. The turtles are able to hurl the beacon back through the portal, taking Krang and the rest of the Technodrome with it. April, Casey, and Vern then shut the portal down. As he disappears, Krang swears he will return for revenge.
In the aftermath, Bebop and Rocksteady are taken back into custody, while Stockman remains at large. At night, the Turtles are honored by Vincent and the NYPD, along with April, Casey, and Vern, and gives the turtles golden keys to the city, and she said to give an opportunity to the people and accept them, but the turtles elect to keep their existence a secret from the public, but they will always have help when they want. On top of the Statue of Liberty, the Teenage Mutant Ninja Turtles celebrate their victory over the vanquished Krang.
