Having finally made it into Ba Sing Se, the kids are given a house in the upper ring. The kids are anxious to tell the Earth King their plan, but there are complications. Meanwhile, still convinced that Iroh and Zuko may be from the Fire Nation, Jet decides to take matters into his own hands and do whatever it takes to get the refugees to reveal their true nature.

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.