Cheech and Chong are at it again in this, their fourth film. But, this is the first time they've appeared on the screen in dual roles. Tommy Chong plays Prince Habib, a maniacal Arab, as well as the famous spaced-out wanderer. Richard "Cheech" Marin is Habib's wily brother, Mr. Slyman, in addition to his usual role. Everybody has problems these days, and Cheech and Chong are no exceptions. They're hired by Slyman and Habib to drive a limousine to Las Vegas, with $5 million secretly stashed in the front seat. In order to get there, the pair sell off the car piece by piece, including the seven~ figure front seat. Cheech and Chong then have a much bigger problem - Slyman and Habib are after them, swearing to kill them, after the appropriate torture.