Set in London, a journalist and a picture researcher uncover a secret from the past and discover hidden aspects of the city. For James Richards there are no surprises left; he is too much in control of his life. Sharon is a child of the video age who enters his life with a vengeance. Her all-consuming passion is to find the truth behind a mysterious piece of film she has found inserted into a government information reel. Through her he discovers that the London he thought he knew is in reality a mysterious and hidden city.