Bugs Moran, hiding out since Al Capone eliminated his gang in the St. Valentine's Day Massacre, is visited by Eddie O'Gara, a man he thought had been killed by rival gangsters several years previously. Although he never cared for O'Gara in the first place, Moran is intrigued when Eddie lays out a plan to put Moran back in charge of the rackets again. Meanwhile, Elliot Ness is looking for Moran and O'Gara, figuring that both will want revenge on the gangsters who are responsible for their plight and that he can use that to destroy the Chicago syndicates permanently.