A phoney evangelist and his nympho wife buy a house in Los Angeles with plans to turn it into "The Church of Latter Day Sin." However, the house turns out to be haunted--which doesn't stop the wife, who, unbeknownst to her husband, cuts a deal with the Devil.

Faced with the town lawyer, the sheriff, and a rival slaughterhouse owner trying to purchase his land, Lester Bacon decides to take matters into his own hands, ordering his hulking and mentally deranged son to permanently dispose of anyone who conspires against them.