Veronica, a 16-year-old girl, is spending the Christmas holidays at her grandfather's in a small village in the Sicilian hinterland when a woman disappears and the fear of the monster who had sown terror in the area ten years earlier returns. The girl suddenly begins to feed a terrible suspicion: her own grandfather could be the culprit.
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.
With the continuous arrival of migrants to Palermo, a councilor becomes the legal guardian of hundreds of children while also dealing with her own family problems.