A man becomes a werewolf after being cursed by a black magic society. Only a jeweled necklace he wears can stop the transformations taking place.

In 1936 Italy, Elio returns home from Africa with a present for his wife in the form of Zerbal, the daughter of a tribal king. Unbeknown to him, his neglected wife Alessandra has formed a relationship with Elio’s otherwise frigid secretary Velma who is less than pleased at Elio’s return.

A posh couple experience car trouble on their way to a villa party and stop into a local mechanic's shop for assistance, unaware of his shady background. After he and his mentally challenged assistant fix the car, the couple invite them to the party to return the favor, leading to an evening of mayhem.