Cécile adopted Benjamin at the age of two and has managed over the years to create a harmonious balance with the young boy. She is considering marrying Marc, a divorced engineer and father of two, when she receives a call from Francis Haudrant, her son's biological father. Panicked at the idea of losing him, Cécile agrees to meet him. He tells her that Benjamin's mother died when he was two months old and that he served five years in prison before going to live in Africa. Now a suburban mechanic and about to become a father again, he feels the need to know what happened to his son.