South Park (1997)

S3E10 Korn's Groovy Pirate Ghost Mystery

Korn arrives in South Park for a Halloween concert and discovers the boys are having trouble with the nasty 5th graders at their school. Eager to assist, Korn decides to join forces with the boys to plot their revenge against the bullies, all while diving into a spooky adventure reminiscent of Scooby Doo!