Teenage Mutant Ninja Turtles (1987): Season 1, Episode 2

1 - 2: Enter the Shredder

The Turtles find out about the Technodrome and try to find it. Splinter finds the Technodrome and ends up getting kidnapped by Shredder. When the Turtles find the Technodrome, Shredder tells the Turtles who is responsible for covering them in the ooze that mutated them.