Chronicles the life and times of Nucky Thompson, the undisputed ruler of Atlantic City, who was equal parts politician and gangster. A bustling little city by the seashore, totally dependent upon money spent by tourists, Atlantic City’s popularity rose in the early 20th century and peaked during Prohibition. The resort’s singular purpose of providing a good time to its visitors - whether lawful or not - demanded a single mentality to rule the town. Success of the local economy was the only ideology, and critics and do-gooders weren’t tolerated. By 1900, a political juggernaut, funded by payoffs from gambling rooms, bars, and brothels, was firmly entrenched. For the next 70 years, Atlantic City was dominated by a partnership comprised of local politicians and racketeers. This unique alliance reached full bloom in the person of Enoch “Nucky” Johnson - the second of three bosses to head the Republican machine that dominated city politics and society.
Desperate to weaken Gyp’s alliance with Masseria and reclaim Atlantic City, Nucky cedes control of one of his prized assets to Rothstein. Harrow returns to Gillian’s brothel for some unfinished business; Luciano is forced to take on a new heroin partner after being arrested in New York; Chalky and Capone put their enmity on hold while taking on Masseria’s men; Margaret decides to end one relationship and considers resuming another.