Normandy, second half of the nineteenth century. Jeanne Dandieu lives in a manor house with her parents and their servant Rosalie. She gets to know Julien, a handsome man, whom she soon marries. Her happiness is short-lived as she finds out that not only has Julien married her for her money but he cheats on her as well, with Rosalie to crown it all.
After attending to a suicidal young man, Dr Richard learns that his wife has been unfaithful for years. This comes as a shock after 10 years of supposedly happy marriage. Back home, he demands answers from Madeleine. A long night of explanations ensues.
Frédéric, a shy small-town man, falls in love with Anne, a middle class woman married to Didier, who cheats on her with top model Barbara. Catherine, a very determined woman, is secretly in love with Frédéric and in order to keep him away from Anne, pushes him into Barbara's arms.
