Gary grapples with his future when he learns his prison sentence is up. Meanwhile, everything gets turned upside down when Quinn and Quinn's Future Self (Nightfall) vie for the love of Gary as they try to save the universe.
Gary Goodspeed is a boisterous yet inept astronaut who, in the midst of working off the last few days of his five-year sentence aboard the prison spacecraft Galaxy One, encounters a mysterious planet-destroying alien. Soon, he befriends the alien, whom he names Mooncake, and discovers that Mooncake is wanted by the forces of a powerful telekinetic creature known as the Lord Commander. Together, with the ship's computer H.U.E, an army of similar but unfalteringly loyal robots, and a growing crew of new shipmates, Gary and Mooncake embark on a quest to save the universe, all while trying to uncover the mystery of what "Final Space" really is.