Insatiable (1980)

Marilyn Chambers plays heiress, model and actress Sandra Chase. She feels she is not sexually fulfilled. Her agent played by Jessie St James gets her a role in a new movie. She has encounters with Serena, and Richard Pacheo. She also tells a flashback story of her being devirginized by David Morris. She also has a fantasy encounter with Mike Ranger, Morris, and St James. She also has a fantasy encounter with John Holmes. St James and John Leslie get intimate in the film also.