Cowboy Bebop: Knockin' on Heaven's Door(劇場版 カウボーイビバップ 天国の扉Gekijōban Kaubōi Bibappu: Tengoku no Tobira, titled Cowboy Bebop: Heaven's Door in English), known internationally as Cowboy Bebop: The Movie, is a 2001 animated film directed by Shinichirō Watanabe. The screenplay was written by Keiko Nobumoto, based on the Cowboy Bebop television series created by Sunrise. The plot centers on Spike Spiegel and his crew as they find a criminal who is planning to release a virus on Mars. The title of the movie is taken from the Bob Dylan song of the same name. The character Vincent is based around the musician.