Vaillantes: Nas is a young woman from a neighborhood in the Parisian suburbs. Since the death of her parents, she has been forced to take care of her family (her two little sisters). As fate is against her, she must assume this new responsibility alone, her husband Mehdi being incarcerated. Fortunately Nas can always count on the support of his best friend: Alyssia. The young woman with a joyful and explosive temperament is an unwavering support for the one she considers her own sister.