Episode descriptions MAY contain spoilers!
Episode # 101 (Chapter 1) The Boy in the Iceberg (The Avatar Returns, Part 1) Katara and her brother Sokka discover a twelve year old boy named Aang with strange tattoos frozen in an iceberg.
Episode # 102 (Chapter 2) The Avatar Returns (The Avatar Returns, Part 2) Prince Zuko finally tracks down the Avatar, only to discover he's a twelve year old boy.
Episode # 103 (Chapter 3) The Southern Air Temple After being gone for one hundred years, Aang returns to his home, while Prince Zuko faces his own problems with Commander Zhao of the Fire Nation army.
Episode # 104 (Chapter 4) The Warriors of Kyoshi Aang, Sokka & Katarra meet a band of female warriors. Zuko continues to track the Avatar.
Episode # 105 (Chapter 5) The King of Omashu Aang revisits the great Earth Kingdom city of Omashu to ride on their delivery slides and has an encounter with Omashu's very bizarre king who puts Aang through a series of interesting challenges.
Episode # 106 (Chapter 6) Imprisioned Katara feels guilty after an Earthbender boy named Haru is imprisoned by the Fire Nation.
Episode # 107 (Chapter 7) Spirit World (Winter Solstice, Part 1) When Aang tries to help a village fight off a strange spirit monster, he accidently ends up in the Spirit World himself.
Episode # 108 (Chapter 8) Avatar Roku (Winter Solstice, Part 2) Aang and the gang must cross into enemy territory on their way to the Fire Nation temple where Aang is hoping to contact Avatar Roku, his past life.
Episode # 109 (Chapter 9) The Waterbending Scroll When Katara steals a waterbending scroll from a band of pirates they join forces with Prince Zuko to track them down.
Episode #110 (Chapter 10) Jet When the gang meets a charismatic leader of a band of rebel freedom fighters named Jet, Sokka becomes suspicious he's not all he seems to be.
Episode # 111 (Chapter 11) The Great Divide Aang agrees to escort two rival tribes of refugees across a dangerous canyon.
Episode # 112 (Chapter 12) The Storm In the middle of a huge storm two separate stories about Aang and Prince Zuko's past memories are reviewed.
Episode # 113 (Chapter 13) The Blue Spirit When Aang seeks medicine for his sick friends, he's hunted down and captured by an elite group of archers known as the YuuYan by orders of newly promoted Admiral Zhao. Aang has an encounter with the mysterious Blue Spirit. But is he friend or foe?
Episode # 114 (Chapter 14) The Fortune Teller Aang and the gang meet Aunt Wu the fortune teller.
Episode # 115 (Chapter 15) Bato of the Water Tribe Sokka & Katara have a reunion with Bato, a friend of their fathers, while Prince Zuko and Uncle Iroh join forces with Jun the bounty hunter to track them down.
Episode # 116 (Chapter 16) The Deserter Aang tries to convice Fire Nation deserter and Master Firebender Jeong-Jeong to teach him to firebend. Katara discovers a new power
Episode # 117 (Chapter 17) The Northern Air Temple Aang visits the Norhern Air Temple after hearing rumors about a tribe of people who can fly.
Episode # 118 (Chapter 18) The Waterbending Master After finally reaching the North Pole, Katara challenges waterbending master Pokku when he refuses to teach her because she's a girl. Meanwhile, Sokka finds himself drawn the the beautiful Princess Yue. Zuko gets into serious trouble
Episode # 119 (Chapter 19) The Siege of the North, Part 1 In part one of two, Admiral Zhao begins his invasion of the North Pole Water Tribe. Meanwhile, Prince Zuko, stowed away aboard Zhao's ship begins his plan to capture the Avatar. Sokka's feelings for Princess Yue grow stronger.
Episode # 120 (Chapter 20) The Siege of the North, Part 2 In part two, Admiral Zhao puts the second phase of his plan into action in the invasion of the North Pole Water Tribe, while Sokka & Katara try to find Aang.