With Congress unwilling to fund his America Works program, Frank but look for money elsewhere.
When Frank and Claire visit Moscow, not everything goes entirely to plan.
In an attempt to fix the cracks growing in their relationship, Frank and Claire renew their vows.
Having plundered the federal disaster relief budget to fund America Works, a hurricane heading for the Eastern Seaboard causes multiple headaches for Frank.
Claire's peace plan is in shatters after a group of Russian soldiers are apparently killed in an explosion. Meanwhile, Doug is told that Rachel is dead, which causes him to hit the bottle.moreless
Frank makes a deal with Petrov, but Claire is the casualty. Meanwhile, Doug reaches out to his brother.
When Bo's life is in danger, Winter and his crew do what it takes to save her life. Even if that means reaching out to those who seek her capture. More is revealed about Bo's fears of continuing to lose people she cares about. In the end, Tate confirms to her that he is her father and provides Bo with comfort, promising to never leave her, giving Bo the strength to come back.
More is revealed about Channing's past with Orchestra and how she ended up with the team, how Bo changed and saved her life.moreless
Agent Knox's plan to take down Nucky begins.
Chalky and Maitland hide out at his old mentor's, Oscar Boneau. Gillian contemplates selling her business for a life with Roy.
Chalky botches the hit on Narcisse and ends up wounded himself. Van Alden saves Al Capone when the building is lit up with Tommy gunfire, and Nucky is forced into dealings with Narcisse.moreless
Julia proposes to Richard much to his delight, prompting him to ask Nucky for work. Narcisse beats Maitland for her failure.
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.
Eli discovers Eddie's key whilst investigating his death, but can't access what it opens, and Nucky gets some nuckie with Sally.
Knox uses torture methods on Eddie, Al's brother is gunned down, and Nucky advises Willie to stick to his false alibi.
Nucky loses confidence in Rothstein as a partner. Willie plays a revenge prank on a fellow student that goes woefully wrong, and Federal agents continue to close in on Nucky's business.
While visiting Tampa, Nucky finds himself attracted to a local bar owner. Willie tries to pinch some alcohol from Mickey's warehouse, and Richard's sister comes to his aid.
Van Alden is ordered to keep an eye on the Capone's. Dr. Valentin Narcisse arrives in town with nothing but trouble with him. Eddie demands a promotion.
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.
Reese and Finch must help their new Number, a counter-terrorist operative who is on the run from her own people.
As Capone's cavalry rides in, the war starts: with firepower on the one hand and scheming to alienate Masseria from Rosetti, Nucky fights to get his business back and keep his life. Gillian takes on Gyp with her very own weapons, but sees herself overpowered; Richard poses as a one-man-army and seems to have more luck saving what's important. Meanwhile, Margaret has run off to face difficult decisions – not only about her unborn baby, but also about the future of her marriage.
Nucky doesn't get much time dealing with Margaret's affair when Gyp's men ambush him in the hotel. He flees with the wounded Eddie Kessler, and as there's nowhere safe to turn, it seems he'll be losing his last loyal man. With a price on his head, Nucky seeks refuge at Chalky's...
Gillian also has to suffer under Rosetti's willfulness when he chooses her club as a new headquarter, forcing her to lock Tommy in his room and finally even take measures against Richard, as she clings to her grandson against all common sense.
Owen makes plans with Katie as well as with Margaret, but those will turn out a whole different way after Nucky sends him to take care of Joe. Nucky too makes promises to his wife, speaking of a better future while trying to sort out his current business situation – being troubled with this, he turns down Chalky, one of his few allies left. On the political side, Gaston takes further action.
Meanwhile, Gyp has to deal with the uncertainties of nature, and Nelson "George Muller" Van Alden with the nature of uncertain dealings.
Gyp bribes the townspeople into silence while Nucky schemes to have him taken out of the picture for good. Gillian has words with James regarding Tommy.
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.