Avatar Aang travels to the spirit world to parley with an ancient power, bringing Fire Lord Zuko ever closer to discovering the truth about his mother’s fate – and his own past. Yet Zuko’s sister, Azula, is becoming increasingly dangerous, threatening to ruin everything that Zuko, Aang, Katara, and Sokka have struggled to achieve on their search!
By Bryan Konietzko, Tim Hedrick, Gene Luen Yang, Micheal Dante DiMartino and Gurihiru.