The first comic book about Ronja based on the Japanese animated TV series by Goro Miyazaki, Studio Ghibli. In the first book, we get to follow Ronja from the thundering night she was born and Mattisborgen is split in two. From the safe upbringing in the castle, she sets out on a journey of discovery in the exciting and dangerous forests, but she also meets Birk, son of the rival robber chieftain Borka.