Serenity On September 30th, a film named Serenity will be released. (Office Site, with Trailer) The film picks up where the short-lived Sci-Fi Channel mini-series, Firefly, left off. The Firefly mini-series is available at Amazon for around $30. Best described as a 'Space Western', it's loads of fun. UPDATE: The Sci-Fi channel will begin airing all 14 episodes beginning Friday, July 22.