Watch Boardwalk Empire Season 1 in Australia

January 1920. On the eve of Prohibition, Atlantic City's Treasurer, Nucky Thompson, condemns alcohol at a Women's Temperance League meeting, where he is noticed by Margaret Schroeder, a pretty, pregnant housewife who comes to him for help in getting her abusive husband Hans a job. Later that evening, the duplicitous Nucky privately tells his ward bosses about the opportunity to make huge profits selling bootleg liquor. At a countdown-to-midnight blast at Babette's Supper Club, he assures Jimmy Darmody, a recently returned WWI vet, that his appointment as "Man Friday" to the new Chief Clerk of the Fourth Ward, Paddy Ryan, will lead to bigger things. Jimmy, meanwhile, has higher aspirations and ends up making an alliance that could have dire consequences for both him and Nucky.

A large crowd gathers to watch the funeral of Big Jim Colosimo in Chicago. Newsmen hound Johnny Torrio, asking him if he was involved in the murder, but Torrio and Capone brush them off.

Simon, the survivor of the shooting, is rushed to a hospital in Pennsylvania, barely alive; annoyed that Jimmy left a witness, Nucky instructs his brother to help `nature take its course'.

Jimmy forms new relationships in Chicago; Nucky celebrates a US Senator; Chalky identifies a lynching suspect; Margaret and Lucy clash.

Eli, Margaret, and Van Alden undermine Nucky's attempts to usher in a joyous St Patrick's Day.

Nucky investigates a boardwalk theft; Jimmy scores points with Johnny Torrio; Margaret stands up to Lucy.

Nucky purges some bad childhood memories; Jimmy forges a new alliance with a veteran; Luciano and a friend cut a deal with the D'Alessio brothers.

While visiting Chicago for the Republican National Convention, Nucky gets some alarming news from Atlantic City.

Nucky gears up for war against a rival faction, and Jimmy maintains his alibi; Margaret lends a hand to Madame Jeunet.

Nucky asks Margaret to toe the party line; Angela witnesses Jimmy's violent side; Capone faces a crossroads; Van Alden struggles with his emotions.

Nucky shakes up the status quo; Jimmy deals with family issues; Van Alden addresses Agent Sebso's temptations.

Atlantic City braces for change on election day; Torrio brokers a deal between two nemeses; Jimmy, Margaret, Van Alden, and Eli think about their futures.