Teenage Mutant Ninja Turtles (2003): Season 1, Episode 14

1 - 14: Notes from the Underground - Part Two

After discovering an abandoned underground Foot Genetics Lab, and being attacked by the once-human Quarry, the Turtles assist them in trying to repair a force field to protect them against the mindless beasts roaming the tunnels. But the force field needs a new crystal power source, and the only place to get one is by travelling deeper underground, to the seemingly haunted catacombs, where many have mysteriously vanished...