Montserrat has always been overlooked. She's a talented sound editor, but she's left out of the boys' club running the film industry in '90s Mexico City.Then her best friend Tristán introduces her to his new neighbour - cult horror director Abel Urueta, who promises that he can change all of their lives, if only they'll help him finish what he claims is a cursed film by a Nazi occultist.Disbelieving, but with nothing to lose, Montserrat and Tristán agree to help. However, as they work together to unravel the mystery of the film and its obscure creator, the pair might find out that sorcerers and magic are not only the stuff of movies.