News of Tommy's activities have reached Winston Churchill. At a family meeting, Tommy lays out his plans for Mosley, which will take place at a rally Sir Oswald is leading. Tommy is surprised by another strategy, coming from an unexpected corner. Meanwhile, Tommy has his own secrets to reveal.

Tommy sets off to North America, where the end of Prohibition brings new opportunities. But he faces new danger from an old adversary who is finally making his move.

Tommy establishes a connection between crime and political power that could alter the course of history. He also receives life-changing news from an unexpected source.

As the clouds of the coming storm gather, Tommy Shelby faces the consequences of his experiences and his actions.