After retiring from the FBI, where he was a secretary of J. Edgar Hoover, Detective Mckenzie is summoned by the famous collector Forrest Ackerman to find "Londres despues de medianoche," one of the most sought-after films in the history of cinema. Although the last copy disappeared in the twenties, the legend states that misfortune was brought upon the actors that were vampires in the film. It says that theaters that try to find it mysteriously catch fire, and those who seek the last copy mysteriously disappear themselves. The detective meets survivors of two worlds: one that threw the film away, and the other that seeks their own piece of history at any cost."