The city of Turin is in the grip of a brutal crime boss known as "Il Marsigliese" and plenty of cops have good cause to want him dead — none more than Inspector Vanni, whose wife was murdered by the ruthless gangster. Having exhausted every other avenue, Vanni forms a crack squad of motorcycle-riding, Colt .38-toting elite officers, tasked with meting out justice on the margins of the law. But when "Il Marsigliese" launches a bombing campaign designed to extort a vast ransom from the city's authorities, Vanni finds himself in a race against time to exact his revenge and avert disaster.

When Marialé is a little girl, she sees her father murder the two lovers and then shoot himself in the head. About 30 years later, she lives in a mansion and has mental problems. She invites a number of friends and one by one they become murdered.

Walter and Paola, presenter and godmother of the sixth Cantagiro, are involved in a misunderstanding: to dismiss a suitor, the presenter pretends to be married to Quattrini.