"Teenage Mutant Ninja Turtles II: The Secret of the Ooze" is a 1991 action-comedy film and the sequel to the original Teenage Mutant Ninja Turtles movie. The story follows the four turtle brothers—Leonardo, Michelangelo, Donatello, and Raphael—as they face a new threat from the villain Shredder and his mutant creations, the Tokka and Rahzar. In this film, the turtles discover the origins of the mysterious ooze that transformed them into ninjas. They team up with their friend April O'Neil and their mentor Splinter to stop Shredder's evil plans, showcasing themes of friendship, teamwork, and bravery throughout their adventure.