After arriving at the great wall of Ba Sing Se, Aang and the gang discover that the Fire Nation has constructed a great drilling machine to penetrate the wall. The drill is also followed by an army of Fire Nation troops. Also, Zuko and Iroh are having trouble hiding the fact that they are both Firebenders.—Anonymous
At the top of the wall of Ba Sing Se, Aang and company see a gigantic Fire Nation machine designed to breach the outer wall. Meanwhile, Uncle Iroh, Zuko, Jet, and the Freedom Fighters arrive at Ba Sing Se. Will the great Earth Kingdom capital finally fall to the Fire Nation?—Michael