Dr. Smith, Will, and the Robot are at the Doctor's winemaking apparatus a short distance from the Robinson campsite when a hairy grunting creature suddenly appears carrying a sophisticated electronic box. The monster follows them back to the campsite where it sets the box down just outside the camp perimeter. The box reveals itself as a combination of communications device and jailer, as it announces the Robinsons are under investigation by the Galactic Tribunal for crimes they allegedly committed in space. The camp is then surrounded by an energized fence that traps everyone inside of it.