At a spacious house in Los Angeles Helene is turning 40-years old and her friends whom include French filmmaker Martine house guest Sophie and Lydia throw her a party. But also there is Kate a friend turning 30 and Sadie a Hollywood film agent turning 50. So all of Helene's Kate's and Sadie's friends arrive for the party where Martine films the events with her movie camera and the shocking secrets revealed by Helene's mother Whitney and her younger sister Nancy whom confide in their interviews about their obsession with food and their roles in life.