At the hospital, three brothers meet at the bedside of their mother in a coma. To pass the time, they discuss the merits and pleasures of marital fidelity and infidelity. The conversations of the two youngest advance as the days go by in increasingly juicy details and fantasies, which will push them to act against the morals and more solid values ​​of the eldest.

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.