Cartman is possessed and may be the key to stopping the Antichrist.

The White House deals with a disruptive spirit from the east wing. Meanwhile, Stan worries that South Park has become too political.

Butters' Al revenge plan backfires, igniting an epidemic of fake videos at school that leaves Detective Harris struggling to tell fantasy from reality.

The town’s annual Turkey Trot turns chaotic when Cartman uses questionable cutting-edge science to win the race.