This book's setting is after the Battle of Seattle. Trenton and Kallista, along with their friends, fly their mechanical dragons, searching for any signs of Kallista's father, Leo Babbage. However, they are surprised to be reunited with him, and he reveals that humans are working as slaves to the dragons. However, they are doing it willingly and they do not want to be rescued. They are protected by their new master, a huge, powerful white dragon. Kallista is shocked, and wonders why her father would ever willingly work for the dragons. Trenton and Kallista will have to find a way to enter the dragon's tower fortress, and remove its power and hold over the city, and the world. This book was very interesting, and people who enjoy fantasy books will enjoy this book. I rate it 5/5.