Singapore Sling, a down-at-the-heels gumshoe with a bullet in his shoulder, has been searching for his lost love, Laura, for longer than he can remember. One rainy night his single-minded pursuit brings him to a mysterious villa inhabited by a pair of odd women. In his weakened condition, Singapore Sling proves to be no match for the duo who turn out to be incestuous mother and daughter serial killers. They take him prisoner. The mystery of Laura's disappearance ignites bizarre sexual fantasies which the women transform into insane pleasure games and rituals of blood and murder.