Mr. and Mrs. Graissac live with their two children in a house in the Auvergne region. They divorce after he is suspected of sexually abusing their daughter, Laurence.
Laurence picks herself up thanks to high-performance sports, until the day her mother and brother, Thierry, have a car accident: Thierry is seriously wounded and Mrs. Graissac is sent to a mental institution.
Laurence comes back home to take care of her brother and financially support her family.
That is how she starts working at the casino in Chaudes-Aigues, where she meets the man who will change her life dramatically.