Teenage Mutant Ninja Turtles Season 2 Episode 13 Return to the Underground 2003
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The Turtles return to the underground city but they find the city is now abandoned, it's crystal moon power source missing, and it's human population reduced to monsters. Can an unstable serum created by Donatello restore the humans to normal?
- Released: 2004-03-06
- Runtime: 22 minutes
- Genre: Action & Adventure, Animation, Kids
- Stars: Michael Sinterniklaas, Wayne Grayson, Sam Riegel, Gregory Abbey, Darren Dunstan
- Director: Peter Laird, Kevin Eastman
