Cartman sings a heartfelt ode about how his water park isn't the way he remembered it.
Disaster strikes the water park.
The boys head to the water park and start getting wet.
Cartman does some calculations and makes a shocking discovery.
Officials are concerned about the high pee levels at the water park.
After the apocalypse, Cartman dreams about what the future will be like.
Kyle finally bites the bullet, just in time to be rescued.
The police quarantine the water park and try to figure out what to do.
Stan's parents try to remain calm while the police attempt to find the antidote.
Kyle prepares for his big dive.
The scientists think they have an antidote and Randy volunteers to be the human test subject.
The boys meet Pi Pi and find there's only one way to survive.