A massive snowstorm traps the mountain town of South Park under a blanket of snow, and when the local schools shut down, Eric Cartman sees his prayers answered. He rallies the boys back into their ongoing fantasy role-playing campaign, but the dynamic has shifted—the New Kid's accumulated power from previous adventures has forced Cartman and his friends to establish a restrictive new ruleset that has fractured the group into hostile factions. As tensions simmer between competing visions of how their game should operate, Cartman grows convinced that Kyle's faction is mounting an assault on his kingdom and dispatches the New Kid to navigate the volatile conflict and uncover the truth behind the brewing rebellion.