Political boss Enoch 'Nucky' Thompson runs Atlantic City at the dawn of Prohibition in this drama inspired by Nelson Johnson's non-fiction book 'Boardwalk Empire: The Birth, High Times, and Corruption of Atlantic City.'
In the series finale, Nucky thinks about moving to Manhattan; Margaret impresses a stockholder at a grain company; and Gillian sees a familiar face at the hospital. In 1897, a young Nucky deals with a family crisis, and comes to an agreement with the Commodore that will chart his career path.
Nucky's war with Luciano draws in Willie and Eli as Nucky tries to maintain his control in Atlantic City. Meanwhile, Maranzano's tenure as boss is nearing the end; Gillian sends a letter from the hospital; and in 1897, a young Nucky quarrels with Mabel about a runaway from Trenton and does a favor for the Commodore.
Chalky runs into Narcisse in Harlem with a plan to set Daughter free. Meanwhile, Nucky mingles with a different crowd when he tries to drown his sorrows in alcohol; and in Chicago, the Feds tap Eli and Nelson to help them neutralize the Capone empire. Also: A young Nucky complains to Mabel about his endorsement of Jim Neary, and teams up with Eli to catch a thief in 1897.
Chalky returns to Atlantic City on a quest for revenge. Meanwhile, Nucky sets up a meeting with Maranzano in New York when he's concerned about Luciano's future plans; and Margaret comes to an agreement with Carolyn Rothstein. In Chicago, Eli and a visiting June attend a dinner party hosted by Nelson and Sigrid. Also: A young Nucky tries to impress Mabel's father in 1897.
Luciano encounters an old foe in Chicago, while Nucky and Margaret find common ground in Atlantic City when they face the same dilemma. Meanwhile, Sally conducts business in Cuba as rumors swirl of a public uprising; and in 1884, a young Nucky continues to impress the Commodore, and gives Eli a glimpse of what the future may hold.
Margaret finds herself in a pickle due to her dealings with the late Arnold Rothstein when his widow starts snooping around his covert affairs. Meanwhile, Chalky wonders where his latest partnership is going; Nucky talks shop with a prominent businessman from Boston; Luciano and Siegel try to strike a deal with Narcisse in Harlem; and in 1884, a young Nucky works hard at the hotel and catches the eye of a girl who's vacationing with her parents.
Nucky visits Johnny Torrio in New York City to discuss his close call in Cuba and find out if new Mafia boss Salvatore Maranzano had anything to do with it. Meanwhile, law-school graduate Willie has a job interview; Eli and Nelson's liquor stash is raided by Eliot Ness in Chicago; and Joseph Kennedy listens to Nucky's pitch for post-Prohibition prosperity. Also: A young Nucky and his family mourn the loss of his sister, Susan, in 1884.
Season 5 opens in 1931 with Nucky in Cuba, where he presses a U.S. senator on the likelihood of Prohibition's repeal and eyes a future business deal with a rum magnate. Meanwhile, Margaret witnesses a casualty of the Great Depression on Wall Street; Luciano makes a bold career move; Chalky catches a break to get out of a bad situation; and in a flashback to 1884, a young Nucky makes an impression on the Commodore.