Still grieving for his brother, Al, in a fit of rage kills a policeman. Rothstein and Margaret unexpectedly run in to each other, and Willie drops out of college, enraging his father.
Nucky reaches out to Joe Masseria after the battle with Rosetti. Gillian takes action to gain custody of her grandson. Eli's oldest son asks Nucky for career advice.
Nucky himself reaches out for a powerful ally, while dealing with his mistress getting more attention than he's comfortable with. Meanwhile, Margaret has to concern herself not only with a living birthday present for her daughter, but also with some delicate feminine issues.
To celebrate the New Year of 1923, Nucky decides to hold a flash New Year's Eve bash. Margaret helps him the hosting, despite their recent disputes. Tensions heat up when a hot-tempered gangster from New York arrives in town.moreless
Nucky makes some family changes on hearing about the death of his Father. Jimmy's current success causes him to rethink his relationship with Angela whom has made a feisty new friend at the beach.moreless
Insurrection rears its ugly head amongst Nucky's ranks. Chalky escapes death when he and some of his men are attacked by the Klu Klux Klan. Margaret continues to worry about Tommy's behavior and Van Alden takes his wife out on the town for their anniversarymoreless
Election day arrives and Nucky prepares for change. Torrio sets up a potentially hostile deal between two bitter rivals.
Van Alden's increasingly conflicted emotions start to interfere with his work. Nucky has words with Margaret in regards to her support. Also, Angela is taken aback when seeing Jimmy's violent side.
Nucky gets troubling news while visiting the Republican National Convention in Chicago, then runs into Jimmy; Van Alden argues with his wife over starting a family; Rothstein prepares for legal trouble.
Nucky investigates a theft on the boadwalk, Jimmy gets on the right side of Johnny Torrio and Margaret stands her ground regarding Lucy.
Nucky's St. Patrick's Day celebrations are cut short when Van Alden raids the establishment.
Al and Jimmy negotiate with a supplier in Greektown. Nucky organizes a surprise party for a U.S. Senator, lobbying him to get more roads to Atlantic City. Chalky, with the aid of Elias, investigate Chalky's driver's lynching. Jimmy settles in with Al and his boss, Johnny Torrio.moreless
Nucky is paid a visit by Agent Van Alden who feels a crime is being pinned on a scapegoat and wants some answers, forcing Nucky to close ranks on all his operations. He visits his old mentor, Commodore Louis Kaestner regarding the womens right to vote and later meets with Margaret Shroeder, still recovering from the beating she received from her now deceased husband, who has asked for help with her children.moreless
On the eve of Prohibition, January, 1920. Nucky Thompson, Atlantic City's Treasurer, condemns alcohol at a Temperance League meeting for women, however, behind closed doors he is telling his ward bosses about the huge amounts of cash they could get selling bootleg liquor.