Decades after the success of the sci-fi series "Galaxy Quest," the show's washed-up stars -- Jason Nesmith, Gwen DeMarco and Alexander Dane -- are unwittingly recruited by actual aliens to pull off an intergalactic rescue mission.
The alumni cast of a space opera television series have to play their roles as the real thing when an alien race needs their help. However, they also have to defend both Earth and the alien race from a reptilian warlord.