Tommaso and Daniele have radically different personalities, backgrounds and socioeconomic situations. Daniele is studying law in humdrum fashion, and he is just as enthusiastic about his politically correct fiancée, a university teaching assistant. His father, a colonel in the Carabineri Corps, has always kept him in line, warning him to stay away from bums and loafers. But all-knowing fate makes his path cross that of an unsavoury type who steals street signs and counterfeits dvd and telephone calling cards for a living. As luck would have it, the two were born on the same day, in the same town and even the same hospital. Once they meet, they are unable to part, until, finally, a series of small signs leads them to discover the tragicomic truth: they were mistakenly switched in their basinets at the hospital. From that point onward, nothing will be the same.