Zorg (Jean-Hugues Anglade) is a thirtysomething aspiring writer making a living as a handyman for a community of beach houses in the seaside resort at Gruissan on France's mediterranean coast. He meets 19-year-old Betty (Béatrice Dalle), a volatile and impulsive young woman, and the two begin a passionate affair, living in his borrowed shack on the beach. After a row with him where she tears apart and smashes up the house, she finds the manuscript of his first novel, reads it in one long sitting and decides he is a genius. However, after another argument with his boss, she empties the shack and burns it down. The two decamp to the outskirts of Paris, where her friend Lisa (Consuelo de Haviland) has a small hotel. Betty laboriously types out Zorg's novel and submits it to various publishers. They meet Lisa's new boyfriend Eddy (Gérard Darmon), and the four have many fun times, often fueled by alcohol. They find work in Eddy's pizzeria but a fight erupts in which Betty stabs a customer with a fork. Zorg tries to slap her back to her senses.