In the 13th-season finale, the boys' trip to a local water park comes with apocalyptic overtones.

Cartman is selected to read the morning announcements at school, but he turns the forum into a bully pulpit to unleash criticism of the student-body president.

The boys take action when a motorcycle festival takes over the town.

Stan vows to save the dolphins after a family visit to an aquarium in Denver on his birthday is marred by a mass slaughter of aquatic mammals.

The boys aspire to be professional wrestlers after seeing their first match live.

Butters hopes his first kiss will put an end to his friends' ridicule.

Kyle seeks help from paranormal experts when his little brother is haunted by ghosts.

Buoyed by news of pirates in Somalia, Cartman hatches a plan to run away to live the life of a buccaneer.

Randy pulls out all the stops to make sure that Stan wins first place in the annual Pinewood Derby

Cartman helps Jimmy with a comedy routine that becomes the sensation of the year until it's time to take credit for the joke.

An April Fools' joke goes bad, inspiring fear and fury among the boys.

Randy's solution to fix the economy finds enthusiastic support in the community and revolutionizes the way people live their lives.

Rival vigilantes battle for supremacy as crime-fighting icons of the town.

In the 13th-season premiere, Kenny gets less than he bargained for when he takes his new girlfriend to a Jonas Brothers concert.