Avatar: The Last Airbender (Volume 2) - Gene Luen Yang, Michael Dante DiMartino, Bryan Konietzko

As Fire Lord Zuko continues his quest to uncover his mother's fate, a shocking revelation causes him to question everything he knows. It's an opportunity that his sister, the deadly and insane Azula, will not fail to take advantage of as she joins Zuko and his friends, Aang, Katara, and Sokka on their journey into a mysterious forest from which some people never reemerge...