Leo (George Peppard) is a 28-year-old novelist who still lives at home with his mother. One night he stumbles upon some beatniks at a coffee house. He falls in love with the beautiful but unstable Mardou Fox (Leslie Caron). Roxanne (Janice Rule) warns Mardou away from Leo, who says his love for her is causing him writer's block. Mardou falls pregnant. She and Leo wind up together.