 In prohibition era Chicago, the ambitious criminal Al Capone moves in to exploit an immense bootleg market for his own profit. Together with his second, the cold-bloodedly practical Frank Nitti, Capone manages to unite the various local crime lords under his leadership and create an incredibly powerful crime syndicate. Through the use of alluring bribery to corrupt the local authorities for his purposes and brutal violence to cow or eliminate the more principled, it seems that Al Capone is above the law. However, the gang makes the critical mistake of irritating the US President one night, and the decision is made to bring Capone to justice. To that end, US Treasury agent Eliot Ness is assigned the task. Ness, who is utterly incensed by the gang violence and corruption that Capone embodies, soon learns that he cannot depend on the local police in this crusade with their rife corruption. Instead, he assembles an elite team of agents handpicked for their skills and especially their refusal to be bought or intimidated by Capone s gang which soon gets dubbed "The Untouchables." As this team strives to investigate and disrupt Al Capone s empire, the resulting conflict escalates into a war that will become which will become more personal, frustrating and destructive than either side can anticipate.