We are in 1976, in Trapani. The mafia is still considered by many as an invention of writers and journalists, but it is precisely at this time that it is instead being transformed, thanks to the enormous amount of money that comes from the heroin trade. This change begins a long war that will blood our country in the years to come. The story of the commissioner Maltese (Kim Rossi Stuart) is that of a man who is alone to fight against something that by all accounts does not exist. Dario Maltese has fled from Sicily many years before, bringing with him a lacerating pain. When he decides to return to his city, his best friend is killed, and at that moment Maltese realizes that he is no longer willing to close his eyes to his past and the future of his land. Become the head commissioner of the police headquarters in Trapani, taking what was the place of the missing brother friend. A grueling work begins for him. The only joy of his life is Noa (Clòe Romagnoli), the daughter, with whom, after a period of painful distance, he will find himself. Maltese knows that the events of yesterday and today are connected and wants to find the threads that held them together and bring them to light, even at the cost of life. Even at the cost of reckoning with his past and discovering what he would never have imagined about himself and his family. That darkness that had kept him far from his Sicily and had slowly devoured him in all these years began to dissolve.