Tommy gets involved in a power game with fascists, freedom fighters and Boston gangsters. As the players plan to double cross him, Tommy visits an old ally in Camden.

Faced with devastating news, Tommy goes on a quest to discover who it was that placed a curse on his family. In Birmingham, Ada takes charge, and Arthur takes on some new recruits.

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.