Plummeting temperatures force the Robinsons and Major West to board the chariot for a dangerous trip to the warmer south, leaving recalcitrant Smith and the robot onboard the Jupitar 2. This contrived, somewhat odd, episode was written to allow the use of high-quality footage from the pilot that didn't include Harris' Smith character or the robot and the plot does not make much sense. Notably, details about the planet on which the family is stranded are introduced only to be conveniently forgotten in following episodes (notably the planet's strange orbit that generates extreme temperature swings). The blending of new and old footage is a bit inconsistent at times (a problem in most of the first few episodes) and the giants are not as impressive as I remember them being but this is still an entertaining episode of the vintage show.