Four turtles fall into the sewers and are befriended by Hamato Yoshi a Japanese man sent to New York who was forced to live in the sewers. One day he sees a strange green glow which transforms the four turtles into human-like creatures. Hamato (now Master Splinter) changes into a giant rat from the green glow and teaches the turtles the skills of the ninja as they team up with news reporter April O'Neil to battle against Yoshi's arch enemy Shredder and Krang, an alien warlord from Dimension X.
Episode 1
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.
Episode 2
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.
Episode 3
Baxter Stockman, a mad scientist, is showing an exterminator his new invention: a rat catching robot called Mousers.
Episode 4
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.
Episode 5
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.
