I read this after watching all of "Avatar The Last Airbender" TV show and it answered a lot of the questions I had. This answered the question of what happened to Zuko's mom. This gave a good history regarding why she left and where she has been. If you like "The Search" you will also like "The Promise."
Collects the adventures of Fire Lord Zuko as he searches for his long-lost mother and uncovers secrets from his past.