Galaxy Quest

The name of this movie is Galaxy Quest released in 1999-12-23 and it's main theme is The stars of a 1980s sci-fi show—now eking out a living through re-runs and sci-fi conventions—are beamed aboard an alien spacecraft. Believing the cast's heroic on-screen dramas are historical documents of real-life adventures, the band of aliens turn to the cast members for help in their quest to overcome the oppressive regime in their solar system..