Landing on a planet some shapeless beings duplicate the Robinsons and take the Jupiter 2 with the intent of conquering Earth. Will gets aboard to stop them.
Did You Know?
This episode is unique in that there is a brief commercial break in the fourth act. It starts with Will being thrown out of his hiding place in front of the John and Don duplicates. Next comes a freeze frame with the message DON'T GO AWAY - BACK IN A MINUTE. The action unfreezes after the break. See more
When the aliens return to their home planet in the Jupiter 2 after the trip to Earth, the Space Pod is seen outside of the building even though the aliens had docked the Pod earlier. See more
[to John and Don
Do not resist, it is futile.