This is a great book based on Norse mythology. You will find some of the major gods and goddesses of Norse mythology along with lesser gods and children of the gods.Another main character is Fire, a creation of the three sisters. The story line focuses on the children of Aesir (children of the gods),Fire, and a few human children. Each of the children had special gifts. They used these gifts to save Odin, the All-Father of Asgard and to regain possession of their land. These children showed that working together they could change prophecies and accomplish major feats. This book is crying for Book Two of the Aesir Kids. I would recommend it to preteens and up. I thoroughly enjoyed the book.