Twenty years ago Marco's father was brutally murdered by a cold-blooded serial killer known as the Crazy Dog. Since then, he has been ceaselessly trying to unveil the chain of events that have resulted in dad's death. Marco contacts Raul Chinna, a well-known criminologist that has made the Dog's bloody legacy his very own field of expertise. As soon Marco and Chinna start to recall the past, they both have to face the fact there is another man obsessed by the murders of Crazy Dog: David Moiraghi...