A mute gunslinger fights in the defense of a group of outlaws and a vengeful young widow, against a group of ruthless bounty hunters.
Luigi "Chinaman" Maietto escapes from prison. As soon as he is free he assigns immediately two henchman to murder the inspector whose testimonial once led to his prison sentence. Inspector Tanzi is left for dead but survives. The local newspapers cover up for him and pretend the assassination had succeeded. When Tanzi gets better, his superior wants him to hide in Switzerland. But Tanzi defies him because he intends to make sure himself that Maietto is put back in prison. He goes for it.
Carlo Antonelli, an engineer from Genoa, gets mugged and decides to take justice into his own hands. At first the muggers seem to get the upper hand, but then he's helped by Tommy, a young robber who takes his side.