Sicily, 1993. Totò Riina has just been captured and receives a visit in prison from a man, it is his childhood friend Biagio Schirò, a presence which forces him to recollect... It is the post-war years in Corleone, Totò is still a small boy when his father and younger brother die following the explosion of an American bomb found in the fields where they were working, a bomb from which his father wanted to recover the gunpowder to sell so as to feed his children. It is Totò, the oldest, just thirteen years old who must now take care of the family. Together with his friend, Biagio, he takes the grain to be milled and suffers the tyranny of the miller who steals his flour. The miller’s boy, Binnu Provenzano, and the young Calogero Bagarella, who share the same fate as the poor devils, intervene in favour of Totò and Biagio. When the four become a band, Luciano Liggio, the right-hand man of Dr. Navarra, the Corleone mafia boss, notes Totò’s courage and determination, and thus recruits him and launches him, together with his friends, in his mafia career. Biagio, however, following the murder of the trade unionist Placido Rizzotto moves away from the group and resumes his studies even if it is Biagio who will save Totò taking him to hospital after a settling of scores with the son of the miller. Totò is arrested for this murder and sentenced to pass his term in the prison of Ucciardone where he gains his primary school leaving certificate. When he comes out of prison he finds his friends, who have also grown, and is joined by a new mafia contingent, Luciano Raia. With their help, Liggio double-crosses Navarra who, at the end of a hard feud, is killed together with his men. Now the young Corleonesi have control over their town. Biagio has instead become a police officer and is on the trail of Totò, but when the two meet face-to-face at the cemetery, in front of Riina’s father’s tomb, Biagio is not able to shoot his childhood friend who escapes arrest and, together with his men, starts to look to Palermo. It is a city to conquer.