Xa xưa, thế giới chia ra làm 4 bộ tộc có quyền lực ngang nhau : Hỏa Tộc, Thủy Tộc, Thổ Tộc và Phong Tộc. Mỗi tộc sẽ có một số người có khả năng sử dụng nguyên tố Tộc của mình. Hàng ngàn năm qua, cả 4 bộ tộc cùng chung sống trong hòa bình. Nhưng rồi, người trị vì mới của Hỏa Tộc, Hỏa Vương Sozin đã khơi mào chiến tranh. Người duy nhất có thể ngăn chặn việc đó chính là Avatar. Avatar chính là hóa thân của Thần Linh, người duy nhất có thể điều khiển cả 4 nguyên tố đó. Nhưng khi thế giới cần đến ông nhất thì ông lại biến mất. Một trăm năm sau, một Thủy nhân tên Karata và anh trai của cô ấy, Sokka, đã tìm ra Aang, bị phong ấn trong một tảng băng. Giờ họ phải giúp Avatar điều khiển được cả 4 nguyên tố trước mùa hè, khi mà cháu trai của Sozin, Hỏa Vương Ozai, sử dụng sức mạnh của sao chổi tấn công và tuyên bố chiến thắng của Hỏa Tộc.
The Avatar State 7.8
Ngày phát sóng: 2006-03-17
Thời lượng: 25 min
Tổng quan: Plagued with nightmares featuring the devastating power of his Avatar State, Aang and the gang meet an Earth Kingdom general who has big plans for defeating the Fire Nation. Meanwhile, Zuko and Iroh, having survived the failed attack on the North Water Tribe, have a surprise visit from Zuko's sister with seemingly good news.
The Cave of Two Lovers 7.5
Ngày phát sóng: 2006-03-24
Thời lượng: 25 min
Tổng quan: On their way to Omashu, Aang, Katara, and Sokka meet a group of nomads who show them a shortcut through the "Cave of Two Lovers". But when the group becomes trapped in the cave, it's up to Aang and Katara to save the group by trusting in love, possibly questioning their relationship. Meanwhile, Iroh gets a lethal rash so Zuko and Iroh head to a small Earth Kingdom town for help, hoping their real identities will not be discovered.
Return to Omashu 7.5
Ngày phát sóng: 2006-04-07
Thời lượng: 25 min
Tổng quan: Despite the shocking news the gang have just discovered, Aang insists on trying to find King Bumi within Omashu's borders, even with the dangers that will await him and his friends if his real identity is discovered. Meanwhile Azula goes in search of old friends to help her with her mission.
The Swamp 7.7
Ngày phát sóng: 2006-04-14
Thời lượng: 25 min
Tổng quan: A mysterious tornado pulls the kids into a supernatural swamp where Katara, Sokka and Aang have mysterious visions. Meanwhile, Momo and Appa are chased by rogue swamp dwellers and only Aang and the gang can save them.
Avatar Day 7.3
Ngày phát sóng: 2006-04-28
Thời lượng: 25 min
Tổng quan: Aang and the gang discover an Earth town that celebrates something called "Avatar Day." But when they get there and learn the festival is of "anti-Avatar" sentiment and Aang is put on trial for a crime a past incarnation allegedly committed. Looking to clear the Avatar's good name, Katara and Sokka venture back to a familiar place to gather evidence and discover the truth.
The Blind Bandit 8.3
Ngày phát sóng: 2006-05-05
Thời lượng: 25 min
Tổng quan: In search for an Earthbending teacher for Aang, the kids go to an underground Earthbending tournament called Earth Rumble 6, where they encounter Toph, a blind but powerful Earthbending girl. After seeing her unique style of Earthbending, Aang wants Toph to become his teacher, but there are complications with Toph's family.
Zuko Alone 8.8
Ngày phát sóng: 2006-05-12
Thời lượng: 25 min
Tổng quan: Zuko travels by himself to an Earth Kingdom town were he meets a local boy. The two almost become friends, while Zuko suffers from flashbacks of his past.
The Chase 8.2
Ngày phát sóng: 2006-05-26
Thời lượng: 25 min
Tổng quan: Tired from trying to escape a machine that shows up every time they try to sleep, Aang and the gang have to escape Azula and her team, but their exhaustion leads to a tight situation. Meanwhile, Zuko must deal with something personal, and Iroh bonds with an unlikely individual.
Bitter Work 8.2
Ngày phát sóng: 2006-06-02
Thời lượng: 25 min
Tổng quan: Toph's instructing abilities come into question when Aang cannot seem to overcome a block that keeps him from earthbending. Sokka gets himself in a jam, while befriending what was, moments before, his next meal, and Iroh and Zuko begin training utilizing new philosophies and methods that originate from the other elements.
The Library 8.1
Ngày phát sóng: 2006-07-14
Thời lượng: 25 min
Tổng quan: When Aang and his friends find a professor who knows of a library that contains information about the world, Sokka decides to go there to hopefully find some information to use against the Fire Nation. The library is guarded by the knowledge spirit, Wan Shi Tong, who doesn't welcome humans into his library, because he believes they only seek information for evil purposes. When Wan Shi Tong discovers Sokka wasn't being truthful with him, he begins to sink the library, bringing the kids down with it.
The Desert 8.0
Ngày phát sóng: 2006-07-14
Thời lượng: 25 min
Tổng quan: Aang searches for Appa while Katara struggles to keep everyone together to survive in the vast desert. Meanwhile, Iroh and Zuko seek help from an ancient secret society.
The Serpent's Pass 8.1
Ngày phát sóng: 2006-09-15
Thời lượng: 25 min
Tổng quan: When Aang and the gang meet up with a group of refugees, they tell the gang where they can get on a ferry to Ba Sing Se. But after a series of events they have to take a deadly route called the serpent's pass with the help of an old friend, Suki. Meanwhile Zuko and Iroh meet up with a boy named Jet and his freedom fighters.
The Drill 8.1
Ngày phát sóng: 2006-09-15
Thời lượng: 25 min
Tổng quan: Having made it to the outer wall of Ba Sing Se, the kids confront a Fire Nation army that is driving a massive Fire Nation drill, which poses an imminent threat to the last Earth Kingdom stronghold. Meanwhile, Zuko and Iroh make crucial mistakes which begin to attract Jet's suspicions.
City of Walls and Secrets 8.1
Ngày phát sóng: 2006-09-22
Thời lượng: 25 min
Tổng quan: Having finally made it into Ba Sing Se, the kids are given a house in the upper ring. The kids are anxious to tell the Earth King their plan but there are complications. Meanwhile, still convinced that Iroh and Zuko may be Fire Nation, Jet decides to take matters into his own hands and do whatever it takes to get the refugees to reveal their true nature.
The Tales of Ba Sing Se 8.4
Ngày phát sóng: 2006-09-29
Thời lượng: 25 min
Tổng quan: A series of short stories, highlighting different characters and their individual adventures in the city. Tales of Katara and Toph, Iroh, Sokka, Aang, Zuko, and Momo.
Appa's Lost Days 8.3
Ngày phát sóng: 2006-10-13
Thời lượng: 25 min
Tổng quan: Appa's journey from being abducted in the desert to the present is explored.
Lake Laogai 8.4
Ngày phát sóng: 2006-11-03
Thời lượng: 25 min
Tổng quan: Aang and his friends continue to search for Appa and, unbeknownst to them, they aren't the only ones looking for him. During their search, the kids meet up with Jet, whom they are understandably reluctant to trust. The kids soon realize that the Dai Li are doing their best to thwart the kids' efforts to find Appa. Meanwhile, Iroh is offered his own tea shop in the upper ring, and Zuko discovers the avatar is in the city.
The Earth King 8.1
Ngày phát sóng: 2006-11-17
Thời lượng: 25 min
Tổng quan: The kids battle Long Feng and the Dai Li when they attempt to show the Earth King the vast conspiracy taking place in his city. Zuko becomes seriously ill and has feverish dreams as he faces a spiritual crisis.
The Guru 8.3
Ngày phát sóng: 2006-12-01
Thời lượng: 25 min
Tổng quan: Aang travels to the Eastern Air temple to receive guidance from Guru Pathik while Sokka is reunited with his long-lost father. Meanwhile, Azula has something diabolical in store for her enemies in the Earth Kingdom, including Zuko and Iroh.
The Crossroads of Destiny 8.6
Ngày phát sóng: 2006-12-01
Thời lượng: 22 min
Tổng quan: Everyone races against time to stop Azula's sinister plan. Zuko finds companionship in an unlikely source. Aang's destiny hangs in the balance—and so does Zuko's, as Iroh tells him it's time to make a choice.
