Sergio Benvenuti is a shy seller of contracts for a Roman company of music, but because of his character he cannot find even a customer, so he asks for help from a fellow named Nadia.
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.
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.