Autumn 1917. Far off, war is raging. Miles from the fighting, Camille, a young woman, leads a life marked out by the news that her husband sends from the front. But one day she receives a note ending their relationship. Distraught and determined to stop at nothing, she decides to disguise herself as a man to go and find him. She heads for the front, cutting across fields to avoid the gendarmes. In a forest, she comes across a small group of soldiers who do not suspect her true identity. She follows them, embarking on a new life and, as the days and nights pass, discovers what she could never have imagined, what her husband had never told her and what her new companions will avoid revealing to her: France.