Celine Sciamma: I had the storyline in mind for a while, as a pitch: "a little girl pretending to be a little boy". When I decided I wanted to make a second film I was looking for a very simple and catchy story, that I could write and direct very fast. I wanted to make a movie in a crazy energy, as free as possible. I thought that story would be perfect, because it's about childhood, the rush of emotions, the energy. I knew the story would benefit from the dynamic of production I was longing for. I wrote it in 3 weeks, shot it in 20 days two months later.
Her parents have no idea what is going on. They are a well adjusted, loving normal family. Her little sister finds out and keeps her secret. But keeping this type of secret is not easy. Before she decides to take off her shirt to play soccer she spends time eyeing her breasts in the bathroom mirror to make sure that she has no breasts because once she starts getting breasts, she going to have to make adjustments to keep up the deception.