Preschool stop-frame animation about Lunar Jim, who lives on the second-to-last moon of the Milky Way. Jim, Rover the robotic dog, space mechanic Ripple, space farmer Eco, Ted the clumsy robot and Pixel the main computer all enjoy extraterrestrial adventures. When the lunar worm gets a lunar burp belly tummy ache, Jim and Rover are immediately on the hunt for some moonbubble medicine. The problem is that the cure is invisible and it's up to Rover's snout to track it down.