Atlantic City 1921. In the wake of Prohibition, Enoch "Nucky" Thompson (Steve Buscemi) wields ultimate power in "the world's playground." After rigging the Atlantic City mayoral election, Nucky and young WWI veteran Jimmy Darmody appear to be in control of the city. However, their grip soon begins to unravel as Nucky is arrested for election fraud and members of both his inner circle and family begin to question their allegiances. All die while, mobsters like Arnold Rothstein, Lucky Luciano, Meyer Lansky, and Al Capone wait in the wings, looking for the right opportunity to grab a bigger piece of Nucky's pic.