Avatar [The Last Airbender]: The Search Omnibus by Gene Luen Yang

Immediately following the Avatar's adventures chronicled in The Promise, this remarkable omnibus that collects parts 1-3 of The Search, from Airbender creators Michael Dante DiMartino and Bryan Konietzko!

For years, fans of Avatar: The Last Airbender and The Legend of Korra have burned with one question--what happened to Fire Lord Zuko's mother? Finding a clue at last, Zuko enlists the aid of Team Avatar--and the most unlikely ally of all--to help uncover the biggest secret of his life.