Nitti realizes Ness and his Untouchables are getting too close for comfort in their single-minded desire to break his organization's hold on the city of Chicago. So he decides Ness' days are numbered, and on the recommendation of minor hoodlum Johnny (also Ness' informant) he hires a newcomer to the city - a psychopathic Cajun backwoodsman called 'Snake' Boureaux. Snake is a hunter, and decides to lure Ness into his own territory - the wilderness. To do this he begins to hunt Ness' wife Catherine and their small daughter. Meanwhile Al Capone is offered a deal by the Commissioner - his parole in return for ten thousand dollars. The plan, however, goes awry and Capone decides to secure his release another way by inciting the inmates of the Penitentiary to riot. But all is not as it seems.