Juliana discovers she's far from safe from the Resistance in the Reich. Smith confronts the reality of the lengths he's willing to go to in order to protect his son. And another father - Joe's - tries to persuade him to give Berlin a chance. Frank also has a decision to make: how far is he prepared to go to help the Resistance cause?

Tagomi faces a dilemma: to stay with his family or return to the world he left behind. Desperate to escape the Reich, Juliana strikes a final, dangerous deal with the Resistance. When Ed reveals a secret that puts the Resistance plan in jeopardy, Frank must decide how to deal with his best friend's betrayal.

Juliana Crain makes a new acquaintance in the Neutral Zone - an Irish fixer named Wyatt - and soon finds herself on the run and seeking Tagomi's aid. The Japanese test an atomic bomb. Joe Blake is sent on a diplomatic mission to San Francisco. Kido hires a new sergeant. Nicole Dormer arrives in New York to head a new propaganda campaign. The Smiths struggle with the aftermath of Thomas' death.

As the Reichsführer continues to provoke the Japanese Pacific States, Juliana barely escapes a deadly situation and discovers a trove of Nazi secrets. John Smith tangles with his political adversary. The Nazis prepare for "Year Zero." Joe and Juliana come to a turning point in their relationship.

Juliana's attempt to stop the Nazis lands her in a precarious position. Himmler and John Smith lead a lavish celebration of Year Zero. Amid a series of successes, Smith faces a setback. Kido returns to San Francisco with a prize, performs an act of kindness for a friend. Tagomi makes a difficult decision. Ed returns to San Francisco and reconnects with Childan.

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.

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.