Angela, a ten-year-old girl, guides her six-year-old sister, Ellie, through numerous 'purification' regimens in an attempt to free themselves of their evil, which she feels is the source of their mother's mental illness. Angela, to say the least, is precocious. She has visions of Lucifer coming to take her and her sister away, and one of her cures is for them to remain within a circle of their dolls and toys until they see a vision of the virgin Mary come to them. But such thinking can only lead to a conclusion that is appropriate for her mental condition.