April O'Neil, ace reporter for Channel 6, investigates recent break-ins, allegedly by Ninjas, which have resulted in the thefts of numerous technologies. A chance encounter with a gang of thieves soon leads her to a bigger story when she is saved from the criminals by four Ninja trained, mutated Turtles.

The Shredder kidnaps Splinter in an attempt to lure the Turtles to his own cause. In order to rescue Splinter the Turtles must enter the Shredder's mobile fortress and brave it's dangerous weaponry.

Baxter Stockman, a mad scientist, is showing an exterminator his new invention: a rat catching robot called Mousers.

Shredder experiments with the Inter-Dimensional Portal, hoping to contact Krangs' Rock Soldiers and prepare an invasion of Earth, but a group of fun-loving aliens called the Neutrionos, renegades in Krang's dimension, take advantage of the Portal's opening and use it to arrive on Earth.

As Shredder lures Splinter into he Technodrome, this time with the promise that a weapon in his possession can restore the sensei to human form, the Turtles confront a giant-sized Krang, now in a new body, in the heart of New York City.

Just when the Turtles believe themselves rid of Shredder, tin-grin is able to persuade Krang to return him to Earth.

The Turtles, wearing their trench coats and fedoras, investigate a wave of mob terror.

A Polarisoid arrives on Earth taking photos of everything and everything he takes a photo of disappears.

Krang sets his sights on a powerful Nuclear-Powered Submarine, believing it's fuel will be more than enough to power the technodrome.

While Raphael is reliving the past, via the Turtles' photo album, their frog friends in the Florida Swamps are being terrorized by a mutant alligator known as Leatherhead.

Today is Michaelangelo's birthday and the other turtles plan a surprise party.

Thanks to a run-in with General Traag from Dimension X, the Turtles discover that Krang is experimenting with his dimensional portal again.

Leatherhead has come to the city searching for the Turtles. While crawling through the sewers he encounters the Rat King who charges him with trespassing.

Rocksteady and Bebop, on Shredder's orders, kidnap Irma. As soon as April discovers Irma has been abducted, she contacts the Turtles.

The Turtles, Zach and his friend Caitlin visit the Museum where a magician, the Great Boldini, intends to make a valuable emerald disappear.

Zach and his brother Walt visit the Turtles. As they leave, Walt takes a map that could guide Shredder to the lair if it happens to fall into the wrong hands.

Shredder tries to trick the Turtles into eating cookies made with anti-mutagen. Michelangelo, wanting to be a human, tries one of the cookies and it mutates him into a teenager.

A team of archaeologists stumble upon a temple of unknown origin buried near the Turtles' lair. Before they can investigate further, they are frightened off by Baxter Fly, who explores the temple himself.

In a last ditch attempt to gain power for the Technodrome, Krang Sends Rocksteady and Bebop to steal a newly created set of energy modules from a hi-tech science lab located at Fort Charles.

The Technodrome suddenly surfaces. The Turtles barely get out of its way in time before Shredder begins firing lasers

The turtles unmask the dragon as they prove that the menacing creature is actually operated by two renegade Turtleoid delegates. Kerma return the turtles back to Earth, where they destroy Shredder's new Technodrome Mark II and afterwards defeat Chrome Dome.

Shredder, Rocksteady, and Bebop arrive at the Asian arts exhibit and proceed to loot. The turtles head out to stop them despite a grave warning from splinter that there will be dire consequences.

Shredder & Krang are still loose on Earth, but without the resources of the Technodrome, they plan to steal equipment from the abandoned Hall of Science at the World Fair. Krang's former weapons engineer, Drakus, using the guise of Beserko, also shows up to cause trouble.