Unfinished documentary portrait. During 1971, Henri Langlois was spending his life at the Cinémathèque at the Palais de Chaillot and devoting himself entirely to the development of his museum without ever sparing himself. He needs to touch, place, nail, shape each corner himself, imagining each new arrangement. The smallest detail counts, the smallest fold of costume. He can spend hours adjusting a jacket, and fatigue sometimes surprises him around a staircase ...