Nucky is rocked by an insurrection among his inner circle; Chalky's life and livelihood are threatened by a vicious KKK attack; Margaret copes with her son's disciplinary problems; Angela vies with Gillian for Jimmy's affections at home; Van Alden shows his wife Rose around town as an anniversary present.

With the Commodore putting the squeeze on Atlantic City's liquor shipments, Nucky reaches out to Washington's new Attorney General, Harry Daugherty, to return a political favor. In an effort to prove his worth, Owen intervenes on a delivery intended for struggling casino operator Lolly Steinman. Two sets of dinner guests clash at Babette's; and Lucy chafes at her loneliness.