Sozin's Comet: The Final Battle
Zuko's tracker, June, is unable to locate Aang, but does find Zuko's uncle, Iroh. He and several other characters (Pakku, Jeong Jeong, King Bumi and Piandao) are part of an otherwise non-aligned group known as the "Order of the White Lotus", which plans to liberate the Earth Kingdom capital, Ba Sing Se, from Fire Nation rule. Zuko and Katara decide to fight Azula in the Fire Nation capital while Sokka, Toph, and Suki attempt to destroy the airship fleet of Ozai.