Adam, Evchen, and Manni are looking at the moon through their home-made telescope. Evchen isn`t interested, and dismisses the moon as a lump of cheese. Manni, who is a big fan of technology, sees satellites and a car driving over the moon`s surface. But Adam hears the moon speak, and hears it ask for flowers to cover its surface. From then on, Adam is determined to breed a kind of flower that can grow on the moon. Although he is made fun of at school and is yelled at by his father, who develops extra-nutritious vegetables for Professor Vitamin, Adam keeps trying. Eventually things take a positive turn. Kondensmaxe, in his airplane, finds Professor Vitamin`s old magic greenhouse. It turns out the Professor was herself concerned with developing such a flower, before the war, and is willing to assist Adam in his research. Manni and Evchen support him every step of the way, and so does Adam`s grandfather.