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.
Belle Duke, in order to get revenge on her former lover Philip Bang, organizes his jail break. But instead of Philip, it is the Italian Felice Brianza, AKAS Felix, who escapes. Now Felix is obliged to help Philip to escape. He succeeds and the two join to defraud Belle. The swindle plot become more complicated when Felix falls in love for Philip's daughter.
A wealthy broker, Federico Picchioni, within two days forfeits his partner and work, finishing well to living with two children and granddaughter (abandoned by her father). He is, at this point, in the face of many difficulties of adjustment but finds comfort in the help of his neighbor.