A Japanese snow macaque's clan meets a stranded hitman, Bryce, and nurses him back to health. But when Bryce bites the dust, it's up to the titular simian (guided by Bryce's ghost) to follow in his assassin footsteps and seek vengeance.

Based on Philip K. Dick's award-winning novel, The Man in the High Castle explores what it would be like if the Allied Powers had lost WWII, and Japan and Germany ruled the United States.