i think aang gets appa back the gang leaves ba sing se realizing the date of the eclipse need to be given to the water tribe and the information has to be told to bumi. to since the ba sing se is the way it is. before that happens azula and jet meet and talk about zuko azula realizes if the avatar manages to defeat ozai that zuko is next in line. azula promises jet reward for what the fire nation did to his family. so azula and jet kidnap iroh demanding zuko goes home as a prisoner forever. Zuko realizes that theres another way to get back into the fire kingdom. defeating the firelord! zuko then begins teaching aang fire-bending.
Then.....................after that happens bumi and crew, aang, katara, zuko, toph, sokka, appa, and momo get in a brawl against azula, jet and their gang, the dai li, and the guys that are supposed to bring toph back home. this sounds good.