Based on a book with the same title by Helen Käit.
Janne and Joosep find a mysterious book of charms that takes the sister and brother along with it to a magical world. The children find themselves in the strange Kingdom of Regnum, where rejoicing crowds receive them. Yet shortly, the dreadful truth comes to light – the Kingdom of Regnum has suffered for centuries under the curse of an awful dragon. Every year, the dragon demands the most beautiful girl in the kingdom for himself and if it does not get its victim, it destroys entire cities and villages.
Now the entire population hopes that Janne and Joosep are the ones who will end the curse! A frightening adventure full of the arts of magic and fantastic creatures awaits the sister and brother, where they exceed their own previous limitations.