In 1958, filmmaker Sergio Bravo bought a sack of old film reels on the street—material destined to be turned into hair combs. The sack contained seven 35mm nitrate reels of the film "El húsar de la muerte" (1925), directed by Pedro Sienna. Leading researchers and guardians of the country's film heritage recount, from various perspectives, the story of a discovery that changed the course of Chilean cinema.