Two different men are possessed by spirits of Native Americans after they separately wander into a sacred burial ground. When John and Sybil come home with their son after a trip to the Mojave Desert, they bring an unusual stone back as a memento of the trip. The stone seems to cause strange noises and other horrible inexplicable phenomena.

Three girls discover that two men are willing to do anything to impress Mother and what impresses Mother is watching her sons commit acts of rape and murder. Now these women are prisoners and lowered to pawns in the game of checkers between two dim wits and their Maniac Mommy and the question becomes, can any of them escape, alive?