When Al Capone is convicted of tax evasion, he's sentenced to 11 years and sent to the federal penitentiary in Atlanta. Capone's farewell is something normally reserved for more honest citizens leading Eliot Ness to go to Washington and propose the construction of Alcatraz prison. In Atlanta, Capone has a pretty good thing going, including guards who make life pretty easy for him in exchange for cash. When it becomes apparent that he too will be transferred to the new prison, Capone uses a cell mate's knowledge of the railroad route to plan his escape. In Chicago meanwhile, Ness becomes aware that the Capone empire is converting assets into cash and he and his team set out to find out why.
—garykmcd