After 100 years have gone by without an Avatar, the spiritual master of the elements, brother and sister, Sokka and Katara find a 12-year-old boy frozen in ice. The Avatar is desperately needed as the Four Nations (Water, Earth, Fire, and Air) are totally off kilter. This is due to the fact that the Fire Nation want to rule the world and have attacked the Northern Water Tribe. It is up to this trio of young people to find a way to regain the balance and bring about peace.
Book 1: Water:
Episode 1: The Boy in the Iceberg: Katara and Sokka meet Aang, an Airbender and the avatar.
Episode 2: The Avatar Returns: After breaking a rule, Sokka bans Aang from the village and he has to leave.
Episode 3: The Southern Air Temple: Aang decides to go home to the Air Temple and brings Katara and Sokka with him.
Episode 4: The Warriors of Kyoshi: While on a pit stop on their way to the North Pole, Aang, Katara and Sokka meet the Kyoshi Warriors.
Episode 5: The King of Omashu: Aang, Katar and Sokka arrive at the Kingdom of Omashu but once there find themselves in a spot of trouble.
Episode 6: Imprisoned: Haru is an Earthbender who has to hide his skills in order not to be taken away by the Fire Nation.
Episode 7: The Spirit World – Winter Solstice – Part 1: Prince Zukko is closing in on the Avatar.
Episode 8: Avatar Roku – Winter Solstice – Part 2: Aang needs to go to the Fire Temple to find out from Roku what his vision means.
Episode 9: The Waterbending Scroll: Katara teaches Aang how to be a Waterbender and he picks it up quite quickly.
Episode 10: Jet: Sokka decides that they should walk because flying on Appa is too noticeable but they are soon surrounded by Fire Nation soldiers only to be rescued by Jet.
Episode 11: The Great Divide: Aang, Katara and Sokka finally reach the Great Divide, a huge canyon.
Episode 12: The Storm: Aang has a dream about a storm and someone needing him.
Episode 13: The Blue Spirit: Sokka is sick from being out in the storm. Soon Katara starts showing symptoms and so Aang goes out in search of medicine.
Episode 14: The Fortune Teller: Aang, Sokka and Katar meet with Aunt Wu to have their fortunes told.
Episode 15: Bato of the Water Tribe: Sokka and Katara meet up with Bato, a warrior from their father's fleet.
Episode 16: The Deserter: In order that Aang gets a chance to see real Firebenders in action, he, Katara and Sokka attend a Fire Nation festival.
Episode 17: The Northern Air Temple: Aang, Katara and Sokka arrive at the Northern Air Temple but Aang is disappointed not to find any Airbenders there.
Episode 18: The Waterbending Master: Aang, Katara and Sokka arrive at the Northern Water Tribe so Aang can learn from the Waterbending master but the Fire Nation is on their heels.
Episode 19: The Siege of the North, Part 1: Katara has advanced quickly in her studies of Waterbending and Sokka and Princess grow closer.
Episode 20: The Siege of the North, Part 2: Prince Zukko has managed to capture Aang all by himself and in the process of escaping with the Avatar.
Special Features: Behind the Scenes Kung Fu, The Art of the Animated Series Book, The Making of Avatar – From Real Life to Animation, Behind the Scenes – The Voices of Avatar, "Ask the Creators", Original Animatic: Chapter 15 – Uncut, Behind-the-Scenes With the Avatar Cast + Crew, The Making of Avatar – Inside the Sound Studios, avatar Pilot Epiosde with Audio Commentary, The Making of avatar – Inside the Korean Animation Studios, Exclusive Bonus Disc