The Berthet family is known throughout the region. They pass for marginals. Larissa Berthet lives under one roof with her family and Yvan, an orphan from the neighborhood whom she has taken care of and raised as her own son. When he finds out that he is going to be a father, Yvan decides to become a 'normal' man. But the local bipolar drug dealer, a jealous cop, a hysterical ex and an unscrupulous mother-in-law decide otherwise... Fortunately, his family is there to support him. But for a Berthet, simple things… often not so simple.