Armando is the daddy, Cristiano is the adult son. Each of them lives his life in a different way respect the other: Armando is an old play-boy and often he "buys" his women with his money; Cristiano is a shy guy who lives in a community with other guys like him. The movie proceeds showing us, ironically, the differences, the different ways to think, to act, to treat the women between father and son.
Broke, and armed only with his sense of humor, middle-aged Gianni lives with his mother in their old apartment. The debts are mounting, but if Gianni looks after the building manager's mother during the Ferragosto, a mid-August holiday, all will be forgiven.
Middle-aged family man Arnaldo is kicked out by his wife because of a misunderstanding. Instead of despairing, Arnaldo takes advantage of the situation to turn around his unsatisfying adult life by going to live in a flat shared with four university students.
In Pietrasanta all are excited for the annual party of summer end. Here we find four characters: Merigo, a naive guy passionate of bike; Pierre, son of the mayor; Simone, a pestiferous kid; Mario, lifeguard of "Bagnomaria".