In the round city of Käsebrot, there was a large green square. In the center of this large green square stood a hunchbacked brown tree. Nestled within this hunchbacked brown tree was a cozy blue nest, and in the middle of this cozy blue nest sat a wonderfully colorful little bird. A little bird so beautiful, colorful, and unique that not only the children in the nearby children's home had taken it to their hearts. In fact, it was so well-known that even people from far away rushed to the round city of Käsebrot and to the large green square to look for the cozy blue nest by the hunchbacked brown tree and to listen to the song of the wonderfully colorful little bird. Until one morning...