A 300-year-old lesbian vampire and her lover stay at a posh European resort. They seduce a sadistic husband and his beautiful wife. The husband is soon found dead, and his wife joins the two vampires.

　　A 25-30-year old Hacienda-owner (David Hemmings) is misbehaving on women due to his traumatic youth; his mother (Alida Valli) covers him for his sadistic actions; however, when he wants the daughter of the mansion supervisor to serve for him, things seem to get totally out of hand. He 'tames' her, but when 'tamed' and finally married, the young woman (Andrea Rau) soon becomes the dominating person in the family.