This sequel to the original television series is a lot of fun and really interesting, but there are many questions raised by the events in this book. Both Aang and Zuko are acting in ways that seem a little out of character, and by the end of this first volume of the sequel, that part still isn't quite making sense. It is possible that both of them, having been thrust into positions of authority so early, are still a little off center. I fear that the necessity of bridging the original series and the sequel series has forced some awkward transitions.
That said, the artwork matches the style of the original series, and the sidekicks are still alternately useful and annoying. Anyone who enjoyed the original series will probably enjoy The Promise. Gene Yang has an excellent ear for the way the characters would say things, and you can hear the voices as you read the story.