Watch Teenage Mutant Ninja Turtles II: The Secret of the Ooze (1991) full movies online.
Synopsis: The turtles find out where the Ooze, the substance which made them mutate, came from. Unfortunately Shredder learns about it too, and uses it to enhance himself. So the turtles have to prove again who’s the better ninja fighter.
Director: Michael Pressman
Writers: Kevin Eastman, Peter Laird
Stars: Paige Turco, David Warner, Michelan Sisti
Sources: IMDB, Wikipedia