Cheech Marin and Tommy Chong play the Corsican Brothers, siblings who were separated at birth but remain bound by a powerful spiritual force. (In this parody of the classic story, however, each brother feels the physical afflictions of the other.) When the brothers are caught in possession of a maniacal aristocrat's prized pink poodle, they manage to escape their foes ... and unwittingly ignite the fires of the French Revolution!