With the demise of their beloved father and Karai incapacitated, the Turtles, April, and Casey, infiltrate Super Shredder's new lair to put an end to Oroku Saki once and for all, no matter what it takes.

When the turtles get word of the Kraang's return, they realize there is an even bigger threat coming to Earth.

Super Shredder has returned with even greater vengeance, forcing the Turtles to enlist the combined aid of Splinter, April, Casey, Karai, Shinigami and the Mighty Mutanimals to destroy him once and for all.

Leo stages a rescue for Karai against Splinter's wishes. While the mission is a success, Karai's knowledge of the truth makes her rush out to take her revenge on Shredder for killing her mother and lying to her for so long, leading to an unexpected turn of events.

After being kidnapped by the hypnotized Karai, the Turtles are placed in deadly traps that they must work together in in order to escape. Splinter, in his efforts to save the turtles, is forced to face Karai in order to free her from Shredder's control.

When the Turtles go to the bizarre realm of Dimension X, Mikey is the only one who can figure the place out.

Leonardo considers asking Splinter for help while facing Shredder's new assassin; Donnie must put aside his rivalry with Casey in order to uncover a Kraang plot.

After witnessing the Kraang in action, Karai realizes the seriousness of the alien threat and proposes an alliance with the Turtles....unless the Shredder finds out.

The Turtles are transported to another dimension where they meet their 1980s counterparts and work together to battle Krang.

An older, weathered Raphael battles road gangs in a post-apocalyptic mutant wasteland.

When Tiger Claw returns, he vows to hunt and destroy the turtles, as well as April and Casey. Meanwhile, Karai finds out the truth about her mother and real father, forcing her to make a life changing decision.

The Turtles create a retro-mutagen to help April's father; Baxter Stockman threatens to mutate April.

Leo takes the Turtles to train in the woods in an advanced ninja ritual; the Turtles must overcome their weaknesses and face their enemies to become a true ninja.

Donnie's grudge with Don Vizioso threatens the Turtle's newest mission.

While the Turtles are infiltrating an undersea Kraang base, the Foot Clan attempts to capture April.

The Turtles must defeat the mighty demodragon Kavaxas to prevent him from destroying the world.

The Turtles get their first look at high school when April's school project draws attention from the Kraang.

The Shredder kidnaps and experiments on the Mighty Mutanimals.

After encountering mutants and ninjas, Casey Jones decides to take on "pure evil" alone. When he meets Raphael, the two hot-headed fighters must put their dislike for each other aside and work together against a common foe.

Leo and Donnie disagree about their plan to stop the Kraang invasion; Donnie must step up as the leader of the bunch when Leo makes a mistake and is separated from the team.

Leo tries to convince the team to rescue Karai; a master thief steals Shredder’s helmet.

The Turtle team hunts for their Sensei, but soon realizes they are being hunted as well.

As the team finally reaches Earth, the Fugitoid reveals a horrible secret about his past.

When the Turtles are accidentally transported to the past, they happen to cross paths with a familiar ninja clan.

Leonardo considers asking Splinter for help while facing Shredder's new assassin; Donnie must put aside his rivalry with Casey in order to uncover a Kraang plot.

The Turtles face an army of robot foot soldiers; Karai captures Leonardo and forces him to do battle with ninjas that can adapt to his every move.

The Turtles, their 1987 counterparts, April and the Mighty Mutanimals must work together to stop 80s' Shredder and Krang from destroying the world. Meanwhile, Bebop and Rocksteady are faced with a difficult and life-changing decision.

An older and weathered Raphael battles road gangs in a post-apocalyptic mutant wasteland.

When the turtles get word of the Kraang's return, they realize there is an even bigger threat coming to Earth.

Raphael accidentally damages a machine that forces him to swap minds with a Kraang. Now he must find a way to convince his brothers and Splinter that it's really him, before the Kraang controlling his body destroys his brothers or worse, reveals their location to the rest of the Kraang.

Snakeweed returns and begins abducting people. Tired of Raphael's constant criticism while trying to stop Snakeweed, Leonardo lets Raphael try his hand at leadership. While away from the group, Leonardo meets a female Foot Ninja named Karai, who tries to lure him to the dark side.

When the Rat King returns, Splinter must overcome his fears in order to defeat his enemy.

Raphael meets a confused alien dinosaur named Zog, the Triceraton.

Baxter Stockman seeks revenge on Fishface and Dogpound as well as the Turtles, and lures them all into a deadly labyrinth.

The Newtralizer returns to New York City, more powerful than ever before, and joins forces with a dangerous and unexpected ally. With the help of Raphael's Salamandrian girlfriend, Mona Lisa, the Turtles fight back to defend their city.

When Casey, Raph, Mikey and Donnie are captured by a new mutant, April and Leo must overcome disabilities in order to save them.

The Turtles are in danger of exposure when hot-headed Raphael is caught on video arguing with a human on the street. He must learn to control his temper in order to help the others retrieve the video before it falls into the wrong hands.

Michelangelo plays with some mutagen, contracting a dangerous infection that mutates out of control.

When April O'Neil is abducted, the Turtles search leads to the base of the robotic Kraang army, and Leonardo struggles to unify his rebellious brothers to victory.

When Donatello loses confidence in his bo staff as an effective weapon, he constructs Metalhead, a fully armed robotic turtle based on Kraang technology.

The Turtles' plans to enjoy Halloween are put on hold when strange monsters threaten to transform New York City.

The Turtles and their enemy crash-land on an ice moon and they must put aside their differences in order to survive.

The team must journey through an ancient alien temple to get a piece of the black hole generator.But they get an ancient star which marks the Aeons

The Turtles believe they have defeated most of their old enemies, but they soon discover that a new evil is rising from the ashes.

When microscopic aliens invade Mikey's mind, the Turtles have to chase them through the strange world of Mikey's subconscious.

The Turtles discover that the Kraang survived their previous showdown and have dropped mutagen canisters all over New York City.

For fifteen years, four mutant Turtles and their rodent sensei have lived a secret life beneath the sewers of New York. Coming to the surface for the first time, the Turtles soon find their day out interrupted as a young girl and her father become the targets of mysterious, and dangerous, men...

When Casey and Donatello bond while building Casey's new hot rod, the bond is challenged by a hot-rodding mutant.

The Turtles experience outer space and alien life for the first time.

The Turtles meet their first fan when a teenager decides to dress up and fight crime as "The Pulverizer."

Part 2

While trying to foil a Kraang invasion plot, the Turtles are hunted by a giant cockroach.

The team must overcome impossible odds in order to obtain the final Black Hole Generator piece that is located on the planet Magdomar.

The Turtles must face off against a new enemy, The Rat King, who threatens not only to take control of the city, but of Splinter's mind as well.

Donatello and April investigate a scientist’s disappearance, but discover a conspiracy regarding a bizarre psychic monkey instead.

Renet transports the Turtles to 13th century Transylvania to stop Savanti Romero.

When he gets upset, Mikey flees and befriends a mutant frog in the woods, only to learn the frog and his family have nefarious plans.

When Donatello's latest invention gives failed inventor and perpetual loser Baxter Stockman enhanced abilities, the turtles must learn to use their heads instead of brute force to defeat him.

While breaking into the hostile environment of TCRI headquarters, the Turtles discover the true intent of the Kraang and resolve to stop the alien invasion once and for all.

While tracking mutagen, the Turtles bring a mutated squirrel back to the lair. When it starts multiplying, the Turtles must hunt the squirrel mutants and prevent them from escaping into the city.

When the guys discover a Kraang ship buried under April's house, they also uncover April's lost mother.

To prove that Turtles can be friends with humans, Michelangelo uses a social networking site to befriend a famous martial artist who is secretly Shredder's top lieutenant.

When Raphael loses his fighting mojo, he must overcome his feelings to save his brothers from certain doom.

When simultaneous threats from the Purple Dragons and Baxter Stockman’s mechanical Mousers force the Turtles to split into two groups, Donnie & Mikey must prove that their “B Team” is just as valuable as Leo & Raph’s “A Team.

An older and weathered Raphael battles road gangs in a post-apocalyptic mutant wasteland.

Donatello experiments with mutagen in an attempt to find a cure for April's mutated father. But one of his expirements goes wrong and he is unleashed in the city.

When the Turtles are trapped in their dreams by creatures, April and Casey must figure out how to wake them up.

The Turtles must gain the trust of the Utrom Council in order to find the next piece of the black hole generator.