Teenage Mutant Ninja Turtles S2 · EP13
Return to the Underground
7.9 · 2003 · Action & Adventure,Animation,Kids · ~21m
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?
