In the episode, the boys are given skiing lessons by Thumper at Bunny Slope. During the lesson, Stan Marsh encounters Tad Mikowski, who challenges him to a skiing race. Stan's lack of experience ultimately leads him to lose.
That night at the Aspen Youth Center, Tad challenges Stan to a race again - this time to be held on the treacherous K-13. He returns to Bunny Slope and seeks training from Thumper to prepare for the race.