Love story unfolds on the background of terrible crimes of the two outcasts - a prostitute-tramp Warnos, who killed many of her customers, and Selby Wall, sent by parents to her aunt to Florida to "cure lesbian inclinations". Desperately Eileen close to suicide wanders into a bar, where she meets Selby and falls in love with her. To live with Selby, she continues to sell her body. A deadly rage grows in her, leading to a series of murders, as a result of which the media will call her Monster - the first serial killer among women.