Get ready to re-board Jupiter 2 with the Robinson family for the final time!
In the year 1997, Earth is suffering from massive overpopulation. Professor John Robinson, his wife Maureen, their children (Judy, Penny and Will) and Major Don West are selected to go to the third planet in the Alpha Centauri star system to establish a colony so that other Earth people can settle there. However, Doctor Zachary Smith, an agent for an enemy government is sent to sabotage the mission. He is successful in reprogramming the ship's robot, but in the process becomes trapped on the ship, and because of his excess weight, the ship and all onboard become hopelessly lost.