"Based on the TV series 'Teenage Mutant Ninja Turtles' as seen on Fox and Cartoon Network"--T.p. verso.
Summary
The Turtles get a big surprise when they meet Leatherhead, a mutated crocodile who was accidentally exposed to the Utrom's green ooze. As the Turtles listen to Leatherhead's story, they get another surprise when an old enemy emerges from the shadows.