 With the Earth running short of natural energy resources the Jupiter mission to colonize and exploit Alpha Prime seems to be the only chance of survival. Professor John Robinson ( William Hurt  ) together with his wife Maureen ( Mimi Rogers  (qv)), his family and fighter pilot Don West ( Matt LeBlanc  (qv)) lead a desperate attempt to create a Hyper-Gate in orbit around the planet Alpha Prime to enable the rescue of Earth to begin. However, others have different reasons for reaching Alpha Prime and Dr. Smith ( Gary Oldman  (qv)) sabotages the Jupiter 2 but fails to get clear and becomes an unwelcome stowaway aboard the ship. To escape the gravitational pull of the sun the Hyper-Drive is fired and the Jupiter 2, after a trip through hyperspace, emerges into a completely unknown part of the galaxy. A search of the star charts reveals that they are completely lost in an uncharted sector of space but this is only the beginning of their problems...