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.
A vicious serial sex killer is on the loose, and landscape gardener and shop-window outfitter Loris is the prime suspect, thanks to his unfortunate habit of getting caught in compromising situations (for which there is always a totally innocent explanation that the police fail to spot). Undercover policewoman Jessica is assigned by eccentric police psychologist Taccone to follow Loris.
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.