Eighteen years after their sci-fi adventure show "Galaxy Quest" was canceled, actors Jason Nesmith, Gwen DeMarco, Alexander Dane, Tommy Webber, and Fred Kwan are making appearances at sci-fi conventions and store openings in costume and character. They're wallowing in despair and at each other's throats until aliens known as Thermians arrive and, having mistaken the show for fact and consequently modeling their entire culture around it, take them into space to save them from the genocidal General Sarris and his armada.

The evil warlord Sarris was named for film critic Andrew Sarris, who once trashed producer Mark Johnson's The Natural (1984). Sarris' metal eye-patch mimics that worn by General Chang (Christopher Plummer) in Star Trek VI: The Undiscovered Country (1991).

Jason Nesmith:
Never give up. Never surrender.

Audio/visual unsynchronized: When Madison and Taggart are standing at the start of the chompers, the audio track has Madison saying "Screw this!" However, looking at the visual, she is clearly using another expletive instead of "screw". Apparently, this overdub was necessary to maintain the PG rating from MPAA.