In an effort to entice a more attractive clientele to the hotel, Oliver mistakenly hires The Party Nightmare, a demon half-horse clown, for a little in-lobby entertainment that unexpectedly turns the entire hotel into a nonstop rave from hell. Oliver must stop the Party Nightmare before everyone, including Oscar and himself, are shot and forced to dance themselves to death.

Left to watch the hotel, Oliver must find food for his hungry guests.