In 1929 Chicago, Federal investigator Eliot Ness struggles in the fight against Al Capone. He decides to form a special team of reliable, dedicated, honest law enforcement officers.

The night of May 3rd, 1934. A traveling carnival is at the Midway, 35 miles outside of Cleveland. There are half a dozen bellydancers on stage, as the barker goes, ""Hurry, hurry, hurry,"" and a sign reads: ""One dime shows you the best hootchy koochy show in the world!"" Hans Eberhardt, twice convicted for armed robbery and dope peddling, spots Ness and his Untouchables and the local police about to pull a raid; he runs to the office trailer of carny Otto Frick.

Chicago, August 29, 1934. That night, in the Haymarket district, special agent Daniel Gosden, a policeman on loan to the Untouchables, goes through a skylight and finds an opium laboratory in the top floor of a rundown tenement hotel. Just then, drug lord Victor Rait and 4 hoods (Gus, Sully, Max, and Trapp) show up, carrying crates of supplies into the place. Rait spots Gosden and gives chase; just as Gosden phones Ness for back-up, Rait blows him away with a shotgun. Then Rait blasts 6 bullets from his gun to disperse the crowd of tenants investigating the noise. Somebody phones the cops, because within minutes Eliot Ness and his men and some policemen are on the scene.

October 16, 1930. Jackson Parker is a small-time bootlegger, he has his henchman Benny deliver bottles of booze to places on a college campus: student unions, fraternity houses. Parker is arrogant, he tells Benny he could ""throw him out with the rest of the garbage."" Parker has big plans: he thinks he's meeting with Frank Nitti. At the Montmartre club, Nitti is telling his assembled lieutenants, ""And after we get that pipeline set up, the feds will have to dig up every street in Chicago to find it."" A round of laughter.