After befriending the once-human creatures in an abandoned underground Foot Genetics Lab, the Turtles join them on a journey deeper into the earth, where they come upon the ruins of a once-great subterranean city.
Genres: Action & Adventure , Animation , Kids
Keywords: based-on-comic , cartoon , martial-arts , mutant , mutant-animal , ninja , reboot , superhero , time-travel , turtle , latest-web-series-online , tv-shows-online