Torn between sexual desire, her vows of chastity and her fear of eternal damnation, a medieval nun struggles with her sanity. Bordering on madness, she seeks solace in the savage words of sexual denial that are spoken to her by a disturbing "death nun" vision. Her sanity is further threatened by the imagined figure of Mary Magdalen, who challenges her concepts of sex as an evil, malignant force. In between these discussions, the nun"s mind is filled with brooding, violent, sexual fantasies that push her into a world of blackness, blood, and orgasmic self destruction.