Teenage Mutant Ninja Turtles (2003): Season 7, Episode 14

7 - 14: Mayhem from Mutant Island

During a night of showing off their extreme sports gear, the Turtles are attacked by a monster from beneath the Earth. They trace the beast to a remote island where they uncover their old foe, Dr. Baxter Stockman, who has created vicious monstrosities to unleash on the unsuspecting public.