Enrico, Peppe, and Angelo Frattasio are three brothers from Forcella, a neighborhood in Naples, who live in very modest conditions: their father Pasquale smuggles tea by passing it off as whiskey.

Enrico has a passion for the world of music and would like to be a DJ, but his lack of attractiveness and shy nature prevent him from even trying; the boy consoles himself by mixing compilations on audiocassette for friends and customers, using the tape recorders in the electrical appliance store where he works.

When the store closes, Enrico decides to turn making compilations into a real job: first he opens a little store, called "Mixed by Erry", where he creates personalized music cassettes for the people in the neighborhood; later, together with Peppe, he decides to ask a local boss for a loan to buy high-tech audio-recorders that allow him to copy a lot of original cassettes in a short time.

Before long, the Frattasios set up numerous laboratories in which they mix thousands of audiocassettes, which they then sell throughout Italy by exploiting black market.

Faced with their refusal, Barambani betrays the Frattasios and helps Ricciardi set up the indictment that will lead to their arrest and the confiscation of their assets.