In the sewers below New York City, mysterious radioactive ooze transformed four average turtles into upright walking ninjas, trained by Master Splinter, formerly Hamato Yoshi, in the ways of ninjitsu. On the surface, a silent crime wave has been erupting. Soon the Turtles meet up with news reporter April O’Neil, who has been trying to investigate the crime wave at hand on top of a case involving stolen technology from Techno Cosmic Research Institute (TCRI) by a criminal known as Superfly. Later learning that the two events are connected by a villain known as The Shredder, The Turtles, along with Splinter, April, and brutal vigilante Casey Jones, fight against the Foot Clan.
