When mobsters try to put an honest policeman on the payroll, he seeks revenge on the mob. But, he soon learns that his actions, however honest, have dire consequences.
Angela is torn between two lovers - one, who tries to romance her in a straightforward manner, and the other who pretends to be severely injured in a car accident.
A man's daughter is killed by thieves during a bank robbery. Due to the incompetence of the corrupt authorities, he decides to take to law into his own hands and track down the killers.
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.
Nick Hezard, a young con man, wants to avenge the death of a friend of his and organizes a swindle trying to cheat Robert Turner, an American businessman he thinks responsible for his friend's death. He succeeds in getting a hundred thousand swiss francs and uses them to carry out the second part of his plan.
Vincenzo 'hunchback' plans a robbery on a armored police van with his gang. Once the job is done, his gang try to kill him and absconds with the loot. Vincenzo hides in the sewers before looking up his friend Monezza who the police later interrogate for his involvement with vincenzo. Meanwhile, Vincenzo is getting revenge on his gang by killing them off one at the time in his various brutal ways.
