An emotionally immature underwater photographer returns home to an affair with his best friend's deaf girlfriend and unresolved issues with the wife he left six months before.

Five years after the death of their mother, Rémi, Mathieu and Christian have not changed much. Rémi is still as prolific and travels the world, multiplying his conquests, Mathieu leads a relatively peaceful life with his daughters and his wife and Christian lives off his brothers, hoping to find the perfect partner and finally settle down. When Rémi is kicked out of his house by his wife who discovers his infidelity and he suffers a panic attack, his brothers come to his rescue. Despite their different lifestyles, Rémi, Mathieu and Christian will try to help each other in order to form the united family that their mother would have wanted for them.