Juliana Crain finds herself in a new world. In the wake of an attack on Trade Minister Tagomi, Chief Inspector Kido begins a crackdown against the suspected culprits: the Black Communist Rebellion. John Smith leads a military incursion into the Neutral Zone to capture Wyatt Price and his rebel army. Helen Smith’s new independence is tested as John comes to claim his daughters.

John Smith receives key intelligence from his officers at the Die Nebenwelt complex, while back at home he struggles with the changing dynamics of his family. Bell Mallory and the BCR join forces with Wyatt Price's rebels. Kido tries to bond with his estranged son, Toru. Childan makes a connection with his Japanese assistant. Juliana discovers an enemy in one world can be a friend in another.

Wyatt’s rebels and the BCR join forces to attack Tokyo’s elite at Robert Childan’s auction. Helen comes back to the Reich to protect her children. Kido receives an unexpected call from the Yakuza. Smith sends an assassin to kill Juliana.

John and Helen host Himmler and his wife for dinner, along with a new and dangerous threat from Berlin, Obergruppenführer Goertzmann. Juliana returns to the High Castle world, arriving in the ruins of what is now known as “The District of Contamination.” Kido is forced to turn against the Crown Princess by his general. A captive Hawthorne Abendsen shares some new tales from the High Castle.

John Smith is forced to confront the choices he's made. The Empire attempts secret peace talks with the BCR. Kido arrests a traitor, threatening to divide the Japanese against themselves. Helen is assigned a new security minder. Juliana reunites with Wyatt to plan the fall of the American Reich.

John Smith discovers that one can get lost on the path not taken. Juliana attempts to decode hidden messages from Abendsen. Amid voices of dissent, Bell devises a new strategy for the BCR. Kido must decide where his true loyalties lie, even if it costs him the Empire.

The BCR launches a massive assault across the JPS, and Kido finds the fate of the Empire in his hands. Childan becomes a captive of the Kempeitai. Helen resolves to support her husband by re-entering public life. Juliana and Wyatt arrive in New York to plan a daring new strategy against Smith.

Juliana's instincts about Helen are put to the ultimate test. As San Francisco evacuates, Kido goes in search of his son, only to find himself a captive. A letter arrives, forever changing Childan and Yukiko's lives. The BCR receives an unexpected offer of help from the Yakuza. Abendsen condemns Smith with his final prediction.

Smith and Helen’s true loyalties are placed on trial by an old nemesis. The BCR struggles to maintain order across the JPS. Kido is forced to confront his atrocities. Bands of roving vigilantes threaten Childan and Yukiko.

On the brink of an inevitable Nazi invasion, the BCR brace for impact as Kido races against the clock to find his son. Childan offers everything he has to make his way back to Yukiko. Helen is forced to choose whether or not to betray her husband, as she and Smith travel by high speed train to the Portal - with Juliana and Wyatt lying in wait.