The Invasion, Part 1
Teenage Mutant Ninja Turtles (2012 TV series) episode
Season Code: 225
Episode: 51
Original airdate September 26, 2014
Written by Brandon Auman
Producers: Vladimir Radev
Directed by Michael Chang
Voice Direction Andrea Romano
Supervising Director  Ciro Nieli
Episode chronology
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"Into Dimension X!" "The Invasion, Part 2"

Teenage Mutant Ninja Turtles Season 2
October 12, 2013 - September 27, 2014
List of Teenage Mutant Ninja Turtles episodes


  1. The Mutation Situation
  2. Follow The Leader
  3. Invasion of the Squirrelanoids
  4. Mutagen Man Unleashed
  5. Mikey Gets Shellacne
  6. Target: April O'Neil
  7. Slash and Destroy
  8. The Kraang Conspiracy
  9. The Good, The Bad, and Casey Jones
  10. Fungus Humungous
  11. Metalhead Rewired
  12. Of Rats and Men
  13. The Manhattan Project, Part 1
  14. The Manhattan Project, Part 2
  15. Mazes & Mutants
  16. The Lonely Mutation of Baxter Stockman
  17. Newtralized!
  18. The Wrath of Tiger Claw
  19. Pizza Face
  20. The Legend of the Kuro Kabuto
  21. Plan 10
  22. Vengeance is Mine
  23. A Chinatown Ghost Story
  24. Into Dimension X!
  25. The Invasion, Part 1
  26. The Invasion, Part 2

Season 1Season 2 - Season 3Season 4 - Season 5

"The Invasion, Part 1" is the twenty-fifth episode of the second season of the 2012 TV series, the fifty-first episode overall in the series, and is also part 1 of 2 of the Season 2 finale. It aired on September 26th, 2014.


Leonardo and Donatello disagree about their plan to stop the Kraang invasion. When Leonardo makes a critical mistake, he is separated from the team, it’s up to his brothers to keep it together.


Major Characters

Minor Characters


The episode opens at Shredder's Lair where the Shredder is seated on his throne, remembering Karai on her days as a human and his pride in her skills as a ninja, right to the point where she mutated as a serpent snake. Tiger Claw then enters the room, asking if the Shredder has made a decision. The Shredder states that he does accept their allegiance with the Kraang, as they have provided the Foot Clan with alot of Technology and have asked for little in return. Tiger Claw questions this decision because the Kraang will most likely betray him, as they have no regard for humanity. The Shredder states that he has no regard for it, either and asked Tiger Claw to leave. The Shredder then contacts Kraang Prime, who asks for a decision as well. In exchange for the Kraang to 'deliver' Splinter and the Turtles to the Shredder and reversing Karai's mutation, the Shredder will make sure that the Kraang take over New York and then the world.

Meanwhile, April and Irma are walking down the street. Irma asks April if she will ever get to meet April's "secret" friends. April assures her that it will happen at some point, but she then questions Irma's choice of having no coat in the cold. Irma tells her that she never notices the cold and begins to pester April again, but their conversation is cut short by some Robot Foot Soldiers that jump down right next to them. April and Irma run away.

Elsewhere, Raph and Casey are on patrol, searching for Karai. Casey pauses to do a little graffiti art. Raph tells him to remain focused, but Casey asks Raph if April ever talks about him. Raph states that it doesn't really matter, since they both know how Donnie feels about her. Casey then tries to end the conversation by saying that he's hardly into April, anyway, though Raph knows differently, judging by Casey's graffiti art of April on the wall...

Leo, Donnie and Mikey are all in Donnie's lab in the Sewer Lair. Donnie is too nervous to eat, tossing his slice of Pizza to Mikey, who is already stuffing lots of slices into his mouth. Splinter agrees that there is reason for concern, as the invasion of the Kraang is impending. Donnie believes that his Turtle Mech will be successful in warding off their attacks, but Leo believes that having a second base of operations outside of the city should be the priority. Donnie argues with Leo about what he would do if he was the leader, but Leo interrupts, stating that he is the leader and Donnie isn't. Splinter admonishes the two, telling them to keep their egos to themselves and focus on the matter at hand.

April and Irma continue to run away from the Foot-Bots, hiding amongst garbage cans in an alley way. April then decides to go down into the sewers, forcing Irma to follow, much to her dismay.

Raph spots Karai on the nearby rooftops and turns to tell Casey, who has been continuing his 'artwork'. Two police officers stop him and attempt to arrest him for loitering.

Back at the Lair, Donnie and Leo continue their discussion about the Turtle Mech, but April and Irma then arrive in the lair's entrance and Splinter is shocked that April brought a stranger with her. Having been pushed into the Lair, Irma searches for her glasses while April explains to Master Splinter why Irma is with her. After locating her glasses, Irma spots the Turtles and begins to react very strangely, eventually revealing that she was never a human, but a Kraang robot being controlled by Kraang Subprime. He reveals that finding the location of the Turtles' Lair was the key to beginning the invasion. Then, multiple portals begin to open up throughout the Lair at once.

Meanwhile, as Casey struggles with the police officers, a few Kraang portals appear on a playground and Kraang step out of them. Casey hits one of the police with his hockey stick and the two policemen are revealed to be Kraang as well. After dispatching the two droids, Raph and Casey retreat in the direction of the Lair.

The Kraang continue to invade the Lair, while Splinter, Donnie, Mikey and Leo defend themselves the best they can. Splinter tells the Turtles and April to escape, while he holds off the intruders. The Turtles and April attempt to escape in the Shellraiser, but Kraang Subprime destroys it with a bunch of missiles. Leo leads his brothers and April off into the sewers, where they must choose to go left toward the Turtle Mech or go right to get up to the surface and look for Raph and Casey. Donnie wants to roll out the Turtle Mech and look for Casey and Raph while inside it, but Leo thinks that the mech is too slow. Donnie shouts that Leo is leading them into disaster, but Leo believes that he is doing what Splinter wants. Another portal opens up right near them and Kraang come through it. Donnie gets injured and Leo tells Mikey to take Donnie and April to safety while he leads the Kraang away. Mikey is hesitant, stating that he doesn't want to leave Leo, too, but Leo insists and then baits the Kraang through the sewer tunnels. Donnie, Mikey, and April escape to the surface and decide to go to April's apartment, where she promises to patch up Donnie's arm. Mikey attempts to call Leo, but he fails to answer a number of times. More portals open up in the streets and Donnie regrets that he argued with Leo, believing that they should have left the city after all. April leads them back to her apartment.

Raph and Casey continue to escape Kraang attacks and finally get in touch with Mikey who tells them to come to April's apartment. Down in the sewers, Leo overhears the Kraang say that they must look for the Turtles to take them to the Shredder. At April's apartment, Kirby O'Neil is pacing and fretting over the events that are happening right outside, while April bandages Donnie's arm. Donnie nervously attempts to confess to April how he feels about her, but April tightens his bandage painfully, stating that Donnie should not talk anymore because talking will only make things hurt more. Kirby begins to panic, but Mikey attempts to cheer him up by downplaying the invasion, which continues at full force. This causes Kirby to pass out. Mikey nervously looks out into the city, which is now full of Kraang Walkers and Kraang Scout Ships.

As the chaos erupts, the Shredder watches it with his disciples. He gets word that Leonardo is moving in their direction. The Shredder prepares an ambush for him. Back in the blazing Lair, Splinter fights Kraang Subprime and defeats him surprisingly easily. Kraang Subprime is knocked out of his robotic body and is then crushed by a collapsing staircase. Splinter looks around at the destruction, finding one of the many pictures of his sons. He wills himself to move forward and look for them.

Meanwhile, Leo arrives on the surface and is confronted by numerous Foot-Bots that slowly herd him into an abandoned construction site. Leo fights aggressively and blocks all of their attacks. The intensity of the fight increases, however, as the Foot-Bots pull out some bows and arrows.

Raph and Casey are roaming the wrecked streets when, all of a sudden, a massive portal opens up before them, only for Kraang Prime to step out of it, outfitted in a large robotic suit and a ray on his robotic arm from which he can blast Mutagen. Kraang Prime announces to everyone that the Earth will soon belong to Kraang, and then starts to douse people in the 'perfected Mutagen', shown in the previous episode, turning them into monsters. Casey wonders about what's happening and Raph tells him that the Kraang want to turn Earth into Dimension X. Casey and Raph watch as the city gets thrown into utter chaos.

To be continued...


"Tiger Claw – Master Shredder the hour grows late have you made your decision?

Shredder – They are dangerous allies, but they have provided us with much technology, asking little in return.

Tiger Claw –They will betray you, you know this, they care nothing for the human race.

Shredder– Nor do I, Leave me Tiger Claw

(Tiger Claw leaves the Room and Shredder contacts Kraang Prime)

Shredder– Kraang Prime.

Kraang Prime – One called Shredder, Kraang must have your decision.

Shredder– If I help you, will you uphold your end of the bargain?

Kraang Prime – Kraang will deliver the ones known as Splinter and the Turtles

Shredder–And Once I find Kari, you will Mutate her back to normal?

Kraang Prime – Kraang Agrees to this, but in return Shredder must then help Kraang conquer the City known as New York City and then…THE WORLD!"


  • This episode released early Sept 20, 2014 on
  • The antique shop under April's apartment is called "Second Time About" a nod to the Second Time Around antique shop.
  • The last episode of SRMFF! is the only one to come in its box in the series, all the others were found unboxed by Michelangelo.
  • This episode mimics the events of What Goes Around... ...Comes Around! where Leo fights the foot outnumbered, and is thrown through April's window.
  • When finding out the police officers are The Kraang in disguise, Casey says 'They've already infiltrated, they're here', a reference to the 1956 Sci-fi thriller Invasion of the Body Snatchers.



The Invasion/Transcript

External Links

Full Episode online at