Determined to assert his paternal rights, Quentin leaves his small village on the Swiss border to go to Lyon to look for his daughter, now a hairdresser, who, busy with her work, hasn't been back to the village for two years. In a few days, it will be Denise's birthday, the youngest of his daughters, and, urged on by his wife, he sets off, determined to bring the prodigal son back to the family celebration. But Denise is now living off her charms.