One of the first films about the mafia occurrence, in which the fight is hopeless, because "the polyp's feeler" reaches everything and everybody. A police inspector and a deputy public prosecutor try to prove that the architect in the city is in the mafia
A six-year-old boy witnesses mobsters beat his father to death. Twenty years later, the now-grown boy begins to track down and eliminate the men who did it, determined to wipe out the entire gang. A police detective investigating the killings, and the Mafia boss who heads the gang, are just as determined to stop him.