Tosia loved to look at the stars. One night she noticed that one brightest star had disappeared! She became very worried. With the help of her teddy bear Fikusia, she jumped into the enchanted rocket standing in her room. - Ready for a space adventure? - asked Ficus, strapping himself in. The rocket roared and flew high until Tosia saw the Earth as a blue ball. Other stars shone all around, and space dust shimmered colourfully. Suddenly Tosia noticed that the moon was smiling sadly. - Maybe he saw where the star had disappeared to? - she whispered to Fikus. They approached the silvery moon and heard a quiet whisper: - If you want to find the lost star, you must go through the Rainbow Nebula. Tosia and Fikuś looked at each other surprised. Would they dare to fly into the colourful mist that swirled right in front of them? Inside, something flashed with golden light....