Episode Title:
The Southern Raiders.
Episode Description:
Azula chases Aang from the temple. Zuko confronts Katara about her distrust of him and tries to gain her friendship. He decides to help Katara find the soldier responsible for her mother's untimely death. Aang warns her that revenge is not the answer. Along the way, Katara's behavior becomes increasingly aggressive, and she even resorts to mercilessly bloodbending a Fire Nation officer. They eventually find the retired soldier, Yon Rha, who reveals that Katara's mother had died protecting her. Despite Katara's rage, pain, and desire for revenge, she is unable to take Yon Rha's life as revenge. Katara and Zuko leave, and once reunited with a relieved Aang and the rest of Team Avatar, Katara finally forgives Zuko and accepts his friendship.