Joe and Juliana must act quickly as a vicious bounty hunter known as The Marshal arrives in Canon City. Tagomi makes plans with Wegener to pass valuable secrets from the Reich, and Frank plots his revenge against the Japanese.

Joe is increasingly torn between duty and his growing feelings for Juliana. While Ed tries to stop Frank from making an irrevocable decision, Smith's investigation is interrupted when he has trouble with his witness, and Tagomi's plan goes awry as events take a dramatic turn at the Crown Prince's speech.

Juliana returns home, only to discover new clues that lead her closer to unraveling the mystery behind the films. Meanwhile, Joe faces a tough debriefing upon his return home. Kido begins his investigation into the events surrounding the Crown Prince's speech, while Tagomi and Wegener make a last-ditch attempt to complete their mission.

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.

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 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.