For four years, the courageous crew of the NSEA protector – “Commander Peter Quincy Taggart” (Tim Allen), “Lt. Tawny Madison” (Sigourney Weaver) and “Dr. Lazarus” (Alan Rickman) – set off on thrilling and often dangerous missions in space … and then their series was cancelled! Now, twenty years later, aliens under attack have mistaken the Galaxy Quest television transmissions for “historical documents” and beamed up the crew of has-been actors to save the universe. With no script, no director and no clue, the actors must turn in the performances of their lives.