Book Three: Fire
Aang wakes up from his battle with Azula to discover that Ba Sing Se has fallen and the world thinks he's dead. So he and his friends set off undercover across the Fire Nation to find Fire Lord Ozai before the Day of Black Sun. Prince Zuko returns home as the triumphant son, but soon finds the honor he so greatly craved from his father is worthless. New alliances are formed and Team Avatar forges a new plan to stop the Fire Lord. But will they find him in time?
Episodes
1 The Awakening Sep 21, 2007 
2 The Headband Sep 28, 2007 
3 The Painted Lady Oct 5, 2007 
4 Sokka's Master Oct 12, 2007 
5 The Beach Oct 19, 2007 
6 The Avatar and the Firelord Oct 26, 2007 
7 The Runaway Nov 2, 2007 
8 The Puppetmaster Nov 9, 2007 
9 Nightmares and Daydreams Nov 16, 2007 
10 The Day of Black Sun: The Invasion (1) Nov 30, 2007 
11 The Day of Black Sun: The Eclipse (2) Nov 30, 2007 
12 The Western Air Temple Jul 14, 2008 
13 The Firebending Masters Jul 15, 2008 
14 The Boiling Rock (1) Jul 16, 2008 
15 The Boiling Rock (2) Jul 16, 2008 
16 The Southern Raiders Jul 17, 2008 
17 The Ember Island Players Jul 18, 2008 
18 Sozin's Comet: The Phoenix King (1) Jul 19, 2008 
19 Sozin's Comet: The Old Masters (2) Jul 19, 2008 
20 Sozin's Comet: Into the Inferno (3) Jul 19, 2008 
21 Sozin's Comet: Avatar Aang (4) Jul 19, 2008