当米里亚姆(蕾雅·德吕盖 饰)跟丈夫安托万·北松(德尼·梅诺谢 饰)离婚后,她希望12 岁的儿子朱利安(托马斯·吉奥利亚)能够远离拥有暴力倾向的父亲,故向法庭申请单独扶养权。然而安托万成功在庭上说服法官,法官最终判处双方拥有共同监护权。大受打击的米里亚姆除了要接受未如所愿的裁判外,还要提防前夫别有用心的父亲。面对水火不容的双亲,身处夹缝中的朱利安不得不想尽一切办法,阻止家庭危机。Antoine Besson, Miriam's divorced husband, is a nice man. In charge of security in a hospital, he is esteemed both by his superiors and his fellow colleagues. Moreover he is a good father who, willing to be closer to his eleven-year-old son Julien, has chosen to be transferred to the town where the boy lives with his mother and his older sister Joséphine, soon to be of age. That is the very reason why Antoine, the caring father, is asking for joint custody of Julien. Well, all that would be fine provided Antoine actually was the man he claims to be. The trouble is that his wife and his two children see him in a very different light. For in the past, Antoine was far from an angel. On the contrary, he had a knack for creating an atmosphere of permanent fear at home, going as far as to occasionally beat his wife under his children's eyes. And he got away with it all the more easily as Miriam, wishing to avoid even more problems, never lodged a complaint against him - a fact that ...