Antoine Besson, a security officer in a hospital, is a well-respected man who has a good relationship with his superiors and colleagues. He is a devoted father who has transferred to the same town as his 11-year-old son Julien, who lives with his mother and older sister Joséphine. Antoine is seeking joint custody of Julien, but his wife and children have a different opinion of him.

Custody
A toxic marriage erupts into a fierce custody war as a couple's inability to co-parent their vulnerable child puts their son's well-being at risk.