We go back in time to the moment Appa was kidnapped by the Sandbenders while Aang and the others were inside Wan Shi Tong's Library to see all of the adventures the poor bison has had, including his adventures with some special friends.

Tired of all the interruptions, Aang and the other force their way into the Earth King's palace. Once in they try to prove they are his allies and there is indeed a war taking place and they need his help. In order to convince him, they take him to various sites around Ba Sing Se to prove themselves. Meanwhile, Zuko is going through a horrible sickness.