2. A Fight, Once Begun

At a high-stakes earthbending match, Aang discovers the teacher he's been seeking. Painful memories emerge after Zuko befriends a farming family.

3. City of Walls and Secrets

Aang and his friends must trade powers for parties and politics as they navigate the two-faced court of the Earth King.

4. The Water Falls, the Stones Emerge

Toph puts Aang's skills to the test. In the streets of Ba Sing Se, Sokka searches for a missing friend, while Katara lives a double life.

5. Ten Thousand Things

To uncover a mythic library that could hold the key to defeating the Fire Nation, the team is forced to ally with an old enemy.

6. The Parable of the Two Dragons

When one of their own is captured, the team concocts a risky plan to reach the Earth King. An illness changes Zuko's perspective — and Iroh's.

7. Something Broken

Torn across the city as the Fire Nation closes in, the team must reunite to save Ba Sing Se — and Zuko must decide where his real loyalties lie.