As Garibaldi's troops begin the unification of Italy in the 1860s, an aristocratic Sicilian family grudgingly adapts to the sweeping social changes undermining their way of life. Proud but pragmatic Prince Don Fabrizio Salina allows his war hero nephew, Tancredi, to marry Angelica, the beautiful daughter of gauche, bourgeois Don Calogero, in order to maintain the family's accustomed level of comfort and political clout.
The story of how Sicilian Mafia boss Tommaso Buscetta (1928-2000), the Godfather of Two Worlds, revealed, starting in 1984, the deepest secrets of the organization, thus helping to convict the hundreds of mafiosi who were tried in the trial held in Palermo between 1986 and 1987.
Palermo, Sicily, 1984. Examining magistrate Giovanni Falcone allies with Tomasso Buscetta, a former mobster, to defeat the clan of Corleone, the ruthless Mafia faction that rules Cosa Nostra with an iron hand, cruelly eliminating all those who dare to oppose its immense power: other criminals, policemen, judges, even innocent civilians. One of them wants revenge, the other wants justice. But only one can survive such an unequal fight.
Casanova, a young patriot in 18th-century Sicily, upon learning that his father and sister have been murdered, returns to Palermo and engages in guerilla tactics against the forces of the Governor. Lady Bianca, the Governor's daughter, is in love with one of the patriots, Lorenzo, and desires to escape from the palace. Her lady-in-waiting, Zanetta, enlists the aid of Casanova and he rescues them and takes them to the partisan's camp. The rebels are victorious. Lady Bianca makes plans to marry Lorenzo, and Casanova and Zanetta have similar plans.
In 1990s Palermo, Pino Puglisi is a priest from the neglected Brancaccio neighborhood dedicated in helping kids to get off the streets and creating an embracing place of hope and solidarity in his church, which means trouble for the local Mafia. He continues his solitary fight until the bitter end.
January 6, 1980. President of the Sicily Piersanti Mattarella is going to Mass with his family when a young man approaches his car and shoots him in cold blood, killing him. The young Deputy Prosecutor on duty that day is Pietro Grasso, future General Anti-Mafia Prosecutor and President of the Italian Senate. His investigations are continued by Giovanni Falcone, who uncovers dangerous connections between the Mafia, the ruling Christian Democratic Party, neo-fascist terrorists, and secret services.
Young men with no future have little in the present as well. Natale is released from prison: he takes up with his friends again but none can find work. Claudio, from Palermo, gets out of juvenile detention in Naples and he's met by Vita, a girl who's come from home to run away with him. Where can they go? A young dad, whose potato stall at the market is shut down because he has no permit, takes his two small children to the beach and yells at them. Mario, gay, a prostitute in drag, gets a visit from his mom; he offers tea, then finds the water to his apartment is shut off. Social workers drop by, parole officers file reports. What hope is there? What options besides crime?
The Ciraulo family lives in the miserable district of Palermo called "Zen". When one of their children dies in a shootout between mafia gangsters they receive compensation and buy a luxury black Volvo. Things go wrong when Trancredi, another son, takes the car out and damages the car door.
Sicily, Fascist Italy, 1925. Dictator Benito Mussolini appoints Cesare Mori, a man as tough as he is honest, as the new police prefect of Palermo and entrusts him with the arduous task of putting an end to the Mafia, a sinister criminal organization that has sown terror on the island for centuries.