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 enjoy extraterrestrial adventures. Ted is preparing to perform at the Intergalactic Space Concert, but he needs an instrument to play. Luckily Jim is able to help him.