Zнайка goes to the Moon together with the little Fuksia and Seledochka. There he discovers a new mineral, which he calls “lunite.” When it comes into contact with a magnet, it causes weightlessness. This makes it possible to build a rocket for a big second expedition to the Moon—to find out whether the truth of the “pancake” theory of the Moon’s origin is correct. The disgraced Nezнайка is not taken on this expedition. Then he persuades Ponchik to fly on the rocket “by sneaking along”…