Cecile (Deborah Hay) has just lost her father, and her way of coping with the grief is to become a sex addict. She demands incessantly from her boyfriend and even flirts with his friends in front of him. She meets a mechanic named Matt (Gwen Ditt) and constantly teases him without taking it seriously; she seduces a British professor on the ferry and takes him to the beach to have sex in a gender-reversed way... It seems she needs to prove her existence through the desires of men for her. Matt originally had a girlfriend, Alice (Helena Simmer), who comes from a conservative background, lacks security, and is on shaky ground in her relationship with Matt. Coincidentally, Alice meets Cecile, who guides her into another realm of sexuality; Matt finds himself continuously tempted by Cecile, only to realize he still loves Alice. Cecile's behavior becomes increasingly outrageous as she begins to plan group sex parties, but her boyfriend, who bursts in to find her, still holds the thought of saving her...