Susan (Ada Tauler), the wife of a British consul in Haiti, arrives to live with her husband Jack (Jack Taylor) whom she hasn't seen for years. She is welcomed by Inés (Vicky Adams), a strange lesbian who serves as a sort of housekeeper. She also meets Olga (Karine Gambier), a foul-mouthed nymphomaniac introduced as Jack's sister. It soon emerges that Jack seems to be locked in a passionate, possibly incestuous relationship with this 'sister' of his, and Susan becomes troubled by strange nightmares about sex, murder and bizarre ceremonies involving voodoo dolls...