In the episode Aang, Katara, and Sokka return to the Earth Kingdom city of Omashu, hoping to find King Bumi so he can teach Aang earthbending. However, they are shocked to find the city has been conquered by the Fire Nation and renamed "New Ozai." The Infiltration
Aang goes to the secret location to meet Bumi, who is being held in a metal coffin suspended high in the air. Just as the trade is about to happen, —Zuko’s sister—intervenes. She has arrived to take over the operation and finds the trade "unacceptable." [S2E3] Return to Omashu
A massive fight breaks out. Aang chases after Bumi's coffin while being pursued by Azula. This marks their first real confrontation, where Aang realizes how dangerous and precise her blue flames are. Meanwhile, Mai and Ty Lee (Azula’s childhood friends) face off against Katara and Sokka. In the episode Aang, Katara, and Sokka return
Aang realizes Bumi is right and lets him go back into captivity. The team manages to return Tom-Tom to his parents safely, proving they aren't the kidnappers the Fire Nation claimed. As they fly away on Appa, Aang is saddened to leave his old friend behind but is motivated by a new goal: finding the teacher Bumi described. She has arrived to take over the operation
Aang manages to reach Bumi, but to his surprise, . Bumi explains that earthbending is about "neutral jing"—waiting for the right moment to strike. He tells Aang he is waiting for the perfect time to liberate the city himself and insists Aang find an earthbending teacher who "listens to the Earth" instead. The Aftermath