Teenage Mutant Ninja Turtles (1987): Season 7, Episode 18 - ProjectFreeTV

7 - 18: White Belt, Black Heart

While Splinter's sensei, Mogo-san, is visiting New York, a criminal gang of ninja, known as the Black Heart Gang, are terrorising the city with a crime spree, and Mogo-san's grandson, Yoku, is their leader.