In 1917, the First World War is raging. Julien is from Luxemburg, so instead of having to go to war he studies piano in Paris. One day his friend Jacques, also a musician and now a fighter pilot on the front, invites him to spend a few days in his family's empty house in Bray. The housekeeper, a beautiful stoic woman lets Julien in, but his friend is late and he is obliged to wait. In the meantime, he starts reminiscing of the pre-war days spent with his friend and Jacques' girlfriend Odile.

Biopic of French film pioneer Alice Guy-Blaché, considered the world's first female director, who directed, produced and/or supervised over 700 films between 1896 an the 1920s, in France and, for a period, in the US.