When Passaguai family patriarch Giuseppe (Fabrizi) decides to take advantage of a corporate discount to bring his wife (Ninchi) and children to spend a Sunday at the beach of Fiumicino, a series of troubles begins for everyone, in the form of a comic nightmare.
Rocco and his brother Martino are two rich country-estate owners who descend upon the city in search of adventure.
To get ahead after he answers a newspaper ad for a business proposition, Passaguai borrows the more impressive apartment of a retired actor and arranges an elaborate luncheon there.
