Complete story — includes the ending
The gang arrives at a Fire Nation village populated by sick and starving people. They are sick because of a nearby Fire Nation munitions factory polluting their river. Katara convinces the group to stay by making Appa appear sick and assumes the role of "The Painted Lady," a local legend, in order to heal the sick and steal food from the factory. Eventually she is forced to give up the ruse to Aang, who helps her in destroying the factory to permanently help the village. In response to the destruction of the factory, Fire Nation soldiers attack the village, but are repelled collectively by Team Avatar impersonating The Painted Lady. Katara reveals herself to the villagers, who thank her for her selfless aid. Later that night, Katara is also thanked by the spirit of the real Painted Lady.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Avatar: The Last Airbender season 3. HTML formatting and reference markers removed. · Content license