This is volume 11 of the Avatar Last Airbender series.
With the disappearances of children in the Fire Nation capital, Avatar Aang and his friends are doing everything they can to find out who-or what-is responsible.
Aang and Zuko must work together to keep the peace, but the emergence of the New Ozai Society, and the appearance of the mysterious Kemurikage of legend, may prove to be too much even for the Avatar when the true culprit of the kidnappings is revealed!
80 page softcover DARK HORSE COMICS
(W) Gene Luen Yang & Various (A/CA) Gurihiru