With Johnny Torrio out of town, Al Capone takes matters into his own hands in the escalating feud with rival Chicago mobster Dean O'Banion. Meanwhile, in Atlantic City, Nucky and Owen find themselves in an unexpected holding pattern in a makeshift warehouse for illegal booze, but Eli doesn't trust Mickey's judgment on a liquor delivery for Arnold Rothstein in the boss' absence; and in New York, a nervous Luciano is called to a meeting with Joe Masseria.