Drugs, murders, robberies. In Turin, violence is an everyday fact of life, but a mysterious vigilante starts cleaning up the streets. In fact, the killer is a cop, Moretti, who went undercover to do the dirty work he couldn't do in cop's clothing.

A kind-hearted vagabond, Tony, being targeted by a gang when he tries to stop a kidnapping. He must turn to his friend, police Santini, and use their wits to survive.