Serenity is a 2005 space western film written and directed by Joss Whedon. It follows on from the canceled Fox science fiction television series Firefly, taking place about two months after the events of the final episode. Set 510 years in the future, Serenity is the story of the captain and crew of a transport and cargo ship. The captain and first mate are veterans of the Unification War, having fought on the losing side. Their lives of petty crime are interrupted by a psychic passenger who harbors a dangerous secret.
The film was released in North America on September 30, 2005 by Universal Pictures. It received generally positive reviews and opened at number two, taking in $10.1 million its first weekend, spending two weeks in the top ten, and totaling a domestic box office gross of $25.5 million and a foreign box office gross of $13.3 million. Serenity won film of the year awards from Film 2005 and FilmFocus. It also won IGN Film's Best Sci-Fi, Best Story and Best Trailer awards and was runner up for the Overall Best Movie. It also won the Nebula Award for Best Script for 2005, the 7th annual 'User Tomato Awards' for best Sci-Fi movie of 2005 at Rotten Tomatoes, the 2006 viewers choice Spacey Award for favorite movie, the 2006 Hugo Award for Best Dramatic Presentation, Long Form and the 2006 Prometheus Special Award.
Among fans, the film is commonly referred to as the "Big Damn Movie" (or "BDM"), a reference to a line from a Firefly episode in which Mal and Zoe call themselves "big damn heroes" after rescuing River and Simon "just in the nick of time". Serenity is a rare occurrence in the industry: a short-lived TV show continued as a major motion picture.