Serenity is a 2005 American space Western film written and directed by Joss Whedon in his feature directorial debut. The film is a continuation of Whedon's short-lived 2002 Fox television series Firefly, taking place after the events of the final episode, with all of the main cast reprising their roles, including Nathan Fillion, Alan Tudyk, Adam Baldwin, and Summer Glau, while Chiwetel Ejiofor stars as a new character. Set in 2517, the story follows the crew of Serenity, a "Firefly-class" spaceship, whose captain and first mate are veterans of the Unification War, having fought on the losing Independent side against the Alliance. Their lives of smuggling and cargo-running are interrupted by a psychic passenger who harbors a dangerous secret.