A horror film director is forced to defend his family when a psychopath lays siege to their home.

Tommaso, a quiet, thoughtful child of five, lives in a world of his own, conversing daily with three imaginary friends. Seemingly loved by his parents, Tommaso senses that their affections are superficial and he yearns for something more.

Policewoman Anna Mari is forced to play a dangerous game with the title serial killer. If she loses, she witnesses the maniac's tortured victims having their throats cut in explicit close-up detail via webcam. She teams up with British cop John Brennan to find out the identity of the murderer.

Oscar dreams of becoming an actor or a stuntman. To contact a manufacturer he stages an accident and consequently injures a young actress, then tries to limit the damage by taking the girl to his home.

Two deadbeat friends barely pass the entrance exam for the Carabinieri, the national gendarmerie of Italy, but love for the same woman gets in the way.