Foundling-Bird

Foundling was a little boy who was found in the forest by a kindhearted hunter. The hunter took Foundling home where he grew up with Lina, the hunter's daughter. One day Lina heard how the cook was planning to kill Foundling. She took her brother and they ran away. The cook was so furious that he sent people after them. But then magically Foundling became a rosebush while Lina became a rose on the bush.
The story repeated itself many times. Each time the two poor children would turn into something else. The cook was however not going to give up. Will Foundling and Lina outwit him or he will finally find Foundling?