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! Written and drawn by the creative team behind the best-selling Avatar: The Promise, Gene Luen Yang and Gurihiru, in collaboration with Avatar: The Last Airbender and Legend of Korra creators Michael Dante DiMartino and Bryan Konietzko, this is the ultimate continuation of Avatar and the perfect companion to Legend of Korra!