Tired of married life and of his profession, Carlo decides to leave the company he owns in the hands of his wife and leaves home to move to a rented house in the heart of old Rome. The man's son, Paolo, is a playwright looking for a coveted success and he too is looking for a new apartment: due to a mistake by the agency, they both end up sharing the same room. However, the two have an irreconcilable character and soon their differences come to light, with the situation taking a further unexpected turn with the arrival of the second son Giacomo and his wife Francesca, who is expecting a child.