Capone is in jail, but still in control of his empire, while Ness deals with a mob controlled mayor.
Capone and Ness take their fight to the boxing ring.
An assassin is hired to kill Ness's wife and daughter.
After Capone gets out of jail, Ness plans to turn Nitti against him.
Ness tries to stop the mob expansion into Cuba, but the corrupt president makes a deal with Capone.
Ness agrees to help a band of revolutionaries overthrow Cuba's government.
When the new Mayor of Chicago cracks down on the mob's activities he becomes marked for assassination.
The city comes under martial law and a tough Army General takes over the streets with an iron fist.
Ness has trouble with a headline-hungry prosecutor when he tries to stop Capone from taking over the New York mob.
Capone tries to brainwash Ness in order to find the location of an informant.
Robbins falls for a Russian immigrant who has made a deal with Capone to save her father's business.