One sunny afternoon, Hania was playing in the garden together with her cheerful dog Fafik. Suddenly, under a large currant bush, the little girl spotted a small, shiny door. The door was blue, had a golden key and looked as if it led to another world. Hania looked at Fafik and Fafik looked at Hania. They opened the door and... they were transported to the Land of Colourful Clouds! Green, orange and purple clouds were flying above their heads. They were shaped like ice-cream, balloons and funny animals. Everything smelled of candyfloss and the laughter of the cloud bunnies could be heard from afar. Suddenly, a cloud in the shape of a huge key appeared in front of Hania and Fafik. It looked as if it wanted to show them something. "Fafik, let's follow that cloud!" - exclaimed Hania. The cloud flew faster and faster, and when it suddenly turned behind a huge rainbow cloud, Hania and Fafik noticed something very strange....