Teenage Mutant Ninja Turtles (2003): Season 1, Episode 15

1 - 15: Notes from the Underground - Part Three

When the Turtles and their new allies start vanishing one by one, only Michelangelo is left. He finally finds the perpetrator in the underground city - it's sole survivor. Though his intentions appears noble at first, by restoring the creatures to their normal human selves, there is a catch...