Jean-Luc (Charles Berling), an established gerontologist, considers his father Maurice dead. He lost him, when he left his wife and children to work as a physician in Africa. Suddenly the father appears again. Maurice (Michel Bouquet) is bankrupt and moves into his son's home for several days. He annoys Jean-Luc with compliments that sound like accusations. Or is it Jean-Luc that always hears irony? His wife likes the senior immediately, and even Jean-Luc's younger brother accepts him. Jean-Luc would like to kill his father but...