Avatar: The Last Airbender: 3x20
Chapter Twenty: Sozin's Comet, Part 3: Into the Inferno
Sokka, Suki, and Toph try to stop the Fire Nation’s air fleet. Meanwhile, Zuko and Azula duel in an Agni Kai and Aang confronts the Fire Lord. On the verge of losing, Aang gets hit in the back of his scar which sends him into the Avatar State.
3 - 1Chapter One: The Awakening Sep. 21, 2007
3 - 2Chapter Two: The Headband Sep. 28, 2007
3 - 3Chapter Three: The Painted Lady Oct. 05, 2007
3 - 4Chapter Four: Sokka's Master Oct. 12, 2007
3 - 5Chapter Five: The Beach Oct. 19, 2007
3 - 6Chapter Six: The Avatar and the Fire Lord Oct. 26, 2007
3 - 7Chapter Seven: The Runaway Nov. 02, 2007
3 - 8Chapter Eight: The Puppetmaster Nov. 09, 2007
3 - 9Chapter Nine: Nightmares and Daydreams Nov. 16, 2007
3 - 10Chapter Ten: The Day of Black Sun, Part 1: The Invasion Nov. 30, 2007
3 - 11
3 - 12Chapter Twelve: The Western Air Temple Jul. 14, 2008
3 - 13Chapter Thirteen: The Firebending Masters Jul. 15, 2008
3 - 14Chapter Fourteen: The Boiling Rock, Part 1 Jul. 16, 2008
3 - 15Chapter Fifteen: The Boiling Rock, Part 2 Jul. 16, 2008
3 - 16Chapter Sixteen: The Southern Raiders Jul. 17, 2008
3 - 17Chapter Seventeen: The Ember Island Players Jul. 18, 2008
3 - 18
3 - 19Chapter Nineteen: Sozin's Comet, Part 2: The Old Masters Jul. 19, 2008
3 - 20Chapter Twenty: Sozin's Comet, Part 3: Into the Inferno Jul. 19, 2008
3 - 21Chapter Twenty-One: Sozin's Comet, Part 4: Avatar Aang Jul. 19, 2008