Philippe, 25, arrives one morning in Arcachon, where his sister lives. He is a young man with no ties, someone people easily confide in. He works seasonal jobs in the restaurant industry. Betty, 20, is a young mother full of life and tenderness for her 5-year-old son, Damien. They still live within the family household, but Betty's relationship with her father is strained. Damien is affected by this tense atmosphere. Betty finds a job, leaves the family home, and gains independence. Betty and Philippe will cross paths.