Vicky loves Ricardo, but Ricardo loves Barbara. So, Vicky visits a gypsy witch who convinces her she must make a pact with Satan in order to cast an effective love spell on Ricardo. After Vicky gives her body and soul to the Dark One, she engages with Ricardo in a passionate night of lovemaking that is cut short by Satan, who, sensing that Ricardo has not completely fallen under the spell, orders Vicky to kill him.