When the Lady is mad at Jack, she decides to send him and Rex on a one-way trip into outer space, and while she enjoys some peace and quiet, Jack and Rex get into trouble on a far-off moon, where they meet an alien named Zip.
A space expert and a geology expert take readers on an out-of-this-world adventure to the moon, where they must navigate the dangerous terrain to clear up space debris before it can interfere with a lunar mission.