In the summer of 1944, twenty-year-old Marlene is thrilled to visit her older cousin, Eva Braun—Adolf Hitler’s mistress—at the Führer’s Bavarian mountain retreat. There, Marlene finds herself in a strange paradise, a world of opulence and imminent danger, of freedom and surveillance.

The two women sneak off and skinny-dip in a nearby lake, watch films in the Führer’s private cinema, and flirt with the SS officers at the dinner table—one of whom will become Marlene’s first lover.

But soon a clandestine mission of mercy forces Marlene to question her allegiance to both her cousin and her country—and to face the chilling reality that exists outside her sheltered world.