Un Chat sur l’Épaule is a story about cinema: for forty years, in his Grenoble workshops, Jean-Pierre Beauviala has been inventing cameras that made the emergence of a light-weight, in-the-field cinema possible. Today, the camera market is saturated with new tools. Everyone experiments new ways of film-making. In cinema, celluloid and artisanship are gradually becoming a thing of the past. And yet, Beauviala keeps on inventing. What Utopia does he still pursue?