Agnès Beauvais, a brave member of the French resistance, is assigned a dangerous mission to infiltrate Nazi Germany with the goal of assassinating Hitler.

Disguised and fluent in German, Agnès navigates enemy lines, but something goes wrong when her contacts fail to meet her at the border.

Captured by the SS, Agnès is taken into custody and subjected to intense interrogation by her Nazi captors, who are determined to break her resolve.

Despite the psychological pressure and threats of punishment, Agnès refuses to reveal any information, holding fast to her mission and the secrets she protects.

The Nazis intensify their efforts to extract the information, using cruel and calculated methods to push Agnès to her limits, testing her endurance.

As Agnès continues to endure her harrowing captivity, the question remains: how long can she hold out against her relentless captors?