Antonio Barozzi moves from Lago Maggiore to Rome to become an actor. He does not realize his agent and acting coach are only manipulating him to further their own careers.

A gang of young and ruthless bikers terrorizes the streets of Rome for no other reason than kicks and to kill their copious amounts of spare time. They purposelessly gang-rape random girls, beat up pedestrians, deal hard drugs, organize illegal street races, menace witnesses, murder city employees and commit violent heists even though they don't need any money as they're all the offspring of rich & eminent citizens. The tough police inspector De Gregori rapidly becomes very frustrated because each time he arrests the arrogant gang leader Stefano, his daddy's attorneys arrange a release warrant the exact same day. But when the gang's aggressions gradually become viler and De Gregori's own wife becomes the target of an assault, he decides to enforce the law slightly more drastic.

Emanuelle returns to Kenya, trying to get an interview with a foreign gangster who's taken refuge in the African countryside while still operating an international criminal network.

A detective sick and tired of the rampant crime and violence in his city, and constantly at odds with his superiors, is finally kicked out of the department for a "questionable" shooting of a vicious criminal. However, he is soon approached by a representative for a group of citizens who themselves are fed up with what they see as criminals going unpunished, and they make him an offer he may very well not refuse.