The Sicilian Tony Arzenta lives in Milan and is the professional killer of a powerful international criminal organization. On his only son's birthday, Tony does his last job, because he wants to get out. When he asks the Syndicate to accept this decision, he is met with expected rejection. The organization does not tolerate dropouts and tries to kill him as a result. Arzenta's child and his wife die in an attack. Tony is out for revenge. With the help of friends, he manages to go into hiding. He begins a bloody campaign and kills bosses and accomplices throughout Europe. After all the killing, he is tired and wants to find peace. The boss Nick Gusto asks him for a meeting and assures him of his safety. Arzenta trusts him and puts herself in mortal danger...