Tosia liked to play in her room, especially on rainy days. One afternoon, as the drops were tapping against the glass, she noticed something strange behind her big old wardrobe. There was a tiny wooden door that she had never seen before! Out of curiosity, she walked closer. The door had a golden handle and was decorated with drawings of rainbows and smiling animals. Tosia touched the handle and the door opened quietly, creaking. Behind them she saw a world full of colourful trees, singing birds and glittering butterflies. Tosia slipped her head behind the door and saw a little pink bunny waving his paw at her. There were balloons hanging from the trees and in the distance she could see the castle's candyfloss towers. Tosia felt a slight thrill of excitement. Should she enter the Rainbow Forest? Maybe there was a great adventure waiting for her behind the door....