The real life of Tommaso Buscetta, the so-called "boss of the two worlds," the first mafia informant in Sicily in the 1980s.

Palermo, Sicily, 1980. Mafia member Tommaso Buscetta decides to move to Brazil with his family fleeing the constant war between the different clans of the criminal organisation. But when, after living several misfortunes, he is forced to return to Italy, he makes a bold decision that will change his life and the destiny of Cosa Nostra forever.