Autumn 1917 in France. The war is almost over. Camille's husband, a soldier, tells her that the front is blocked, that the enemy trenches are as precarious as their own. That chaos is total, that the terrain they win with their bayonets is soon lost again. One day, she gets his last letter: he writes to say goodbye, he's leaving her. Incapable of accepting it, Camille dresses up as a man and travels to the front to find him. She comes across a group of soldiers in a forest. She does not tell them she is a woman, they do not tell her they are deserters. Together they will find the best way to wait for the end of the conflict and it will be singing, dancing, trying to make the most of the situation to forget that they have been cannon fodder for three years.