Avatar Aang awakens on a captured Fire Nation ship with his friends, recovered from the ordeal in Ba Sing Se. They hear the horn of an approaching ship and make their way to the back, where they fight off firebending soldiers. Aang finds out about the plan to invade the Fire Nation during a solar eclipse, which will render the firebenders powerless. They realize they are in need of supplies, so they venture into a Fire Nation town disguised as civilians. Afterward, they discover a Fire Nation Army factory is polluting and hurting the people of a village called Jang Hui. Aang and Katara use waterbending to destroy the factory and save the village. In doing this however, they catch the attention of General Mung, whom they must defeat.