Gene Luen Yang

Children are disappearing in the Fire Nation capital! Avatar Aang and his friends are doing everything in their power to save them—but will it be enough?
And worse, when Azula—the mad sister of Fire Lord Zuko—appears on the scene, Zuko locks down the city to catch her, igniting fear and riots in the streets! Will Zuko follow in his evil father’s footsteps in order to save those he holds dear?
* The official continuation...

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.

Dr. One-Zero won't stop until the whole town-no, the whole world-embraces the "true happinessy found in his poisonous potion, Green Pop. And now that he has the Turtle of Light, he's virtually unstoppable. There's one weapon that can defeat him: another Turtle of Light. Unfortunately, they can only be found in another dimension! To open a portal to this new world, Hopper, Eni, and Josh's coding skills will be put to the test.

Determined to learn the history of once-elite Stately Academy, Hopper, Eni, and Josh are challenged to outmaneuver Principal Dean, who demands that the team turn over their most powerful robot and threatening coding genius, Professor One-Zero.

"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"--Page 4 of cover.

When the Fire Nation begins to believe that the country will perish if Zuko stays in power, Avatar Aang and his friends must protect the ruler.

"There's something lurking beneath the surface of Stately Academyliterally. In a secret underground classroom Hopper, Eni, and Josh discover that the campus was once home to the Bee School, an institute where teachers, students, and robots worked together to unravel the mysteries of coding. Hopper and her friends are eager to follow in this tradition and become top-rate coders. But why are Principal Dean and the rugby team suddenly so interested in...

Hakoda works to tighten the security of the city, while Katara's distrust of the Northern newcomer grows, and Gilak's crew reveals troubling information.

"With the disappearances of children in the Fire Nation Capitol, Avatar Aang and his friends are doing everything they can to find out what is going on. Aang and Zuko must work together to keep the peace, but the emergence of the New Ozai Society and the mysterious Kemurikage from legend appearing may prove to be too much even for the Avatar when the true culprit of the kidnappings is revealed"--Amazon.com.