In Chicago, Jimmy bonds with one of Johnny Torrio's prostitutes, Pearl, and finds himself increasingly at odds with the hot-headed Al Capone. Back in Atlantic City, Nucky looks to leverage his relationships with ambitious U.S. Senator Walter Edge as well as Jersey City Mayor Frank Hague. Margaret impresses at Nucky's birthday party, while Lucy tries to protect her territory.

After the brazen robbery of one of his Ward Bosses, Nucky turns up the heat on Lucky Luciano. An emboldened Margaret stands up to Lucy. In Chicago, Al Capone's frustration over family issues spills over into his relationship with Jimmy, who scores points with Johnny Torrio for a bold power play involving Charlie Sheridan and the neighborhood of Greektown.