Aileen Wuornos, an aging prostitute, meets Selby at a bar in Daytona Beach. Self-absorbed Selby likes Aileen almost immediately; she likes that 'Lee' wants to attend to her hand and foot and take care of her. At a roller rink, Aileen displays her ability to ascertain men's abnormal sexual proclivities at a glance. They have a passionate encounter skating together and quickly become committed to one another, then move into a motel together.Always needing money Aileen works the highways. A john drives her into the woods and beats her unconscious, then brutally sodomizes her awake. Facing certain murder, Aileen breaks free and kills the man with her own gun. Empowered, she decides to quit prostitution. Any money is partied away as Aileen tries to find legitimate work. This is not an easy task; she has no qualifications or experience, and has a very bad temper, which she often displays during job interviews. Selby demands money just to eat, but also wants a home and vacations. Aileen inevitably returns to her trade, though the worm has turned. Now she stalks the johns and kills them for their money and cars as she tries to justify her blood lust as a victim of rapists and murderers. Selby's eventual realization of the truth drives a wedge between the lovers. The lovers part and Aileen is arrested. She speaks to Selby one last time, while in prison. Selby reveals incriminating information over the telephone and she realizes Selby is with the police. To protect Selby, Aileen states she committed the murders alone. During Aileen's trial, Selby testifies against her, with Aileen's loving consent.Aileen Wuornos was convicted, sentenced to death and executed by the state of Florida.