The unemployed actors of the Galaxy Quest television series are reduced to convention appearances and store openings. But when a distressed interstellar cadre of benevolent aliens beam Jason Nesmith and his crew of has-beens onto their ship, they have the misguided hope that these 'historical documents' can defeat a genocidal space warlord.

Originally produced as a motion picture in 1999. Special features: "Historical documents: the story of Galaxy Quest" featurette; "Never give up, never surrender: the intrepid crew of the NSEA Protector" featurette; "By Grabthar's Hammer, what amazing effects" featurette; "Alien school: creating the Thermian race" featurette; actors in space; Sigourney Weaver raps; deleted scenes; Thermian audio track; theatrical trailer.