South Park (1997)

S9E8 Two Days Before the Day After Tomorrow

A state of emergency due to global warming is announced in South Park when the largest beaver dam in the world collapses, inundating the nearby town of Beaverton. As the residents of Beaverton await assistance, the people of South Park focus on one pressing question: who is responsible for the disaster? Meanwhile, Stan and Cartman are the only ones aware of the true culprit behind the chaos.