Sokka and Katara, a brother and sister, represented the Water Tribe and accompanied Aang throughout the series. The kids soon realize that the Dai Li are doing their best to thwart the kids efforts to find Appa. The other four viewings were purely for entertainment because it was that good. Bending is a powerful form combining martial art and elemental magic. After seeing her unique style of earthbending, Aang wants Toph to become his teacher, but they find out Toph has hardships of her own.
They find out that there is a play about them and all their past adventures, and decide to atttend. The Earth Kingdom remains and fights a hopeless war against the Fire Nation. The disgraced prince of the Fire Nation, Zuko, served as the main antagonist of the show for much of the first and second season. The gang travels to the Earth Kingdom to meet with a general who plans on using the Avatar State to beat the Fire Nation. The show's pilot first aired on February 21, 2005, and its highly anticipated two-hour finale aired on July 19, 2008.
Then, the Fire Nation launched a war against the other three nations. Jet's friends are disappointed that he's so obsessed with catching them, and set out to make a better life for themselves. But will Katara be able to keep her cool when she meets him or will she go too far? The invasion into the Fire Nation gets underway and appears to go as planned, but when Aang reaches the castle, the Fire Lord is nowhere to be found, leading to the realization that the invasion was not a surprise and the troops have walked into a trap. Can Aang learn earthbending or did the world get an avatar who cannot master the four elements? There they meet Toph aka the Blind Bandit , a blind, but powerful earthbending girl. With help from technology designed by Sokka and built by the Mechanist, the force makes it to the island and the battle begins.
After hearing the story, Zuko realizes he knows who killed her, and takes Katara off to find him. Aang decides to seek out the spirit for her help, but she may be more familiar then he thought. Meanwhile, Aang faces off with Ozai, but finds himself overwhelmed by the immense power he has gained from Sozin's Comet. 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. It is here that the village's last remaining waterbender Katara and her warrior brother Sokka rescue a strange 12-year-old boy named Aang who has been suspended in hibernation in an iceberg. Zuko reveals Ozai's special plans for his victory over the Earth Kingdom.
During their search, the kid's meet up with Jet, whom they are understandably reluctant to trust. Everyone acts weird whenever the war is mentioned. The Water tribe soon discovers that Aang is not only an Airbender--the extinct race no one has seen in a century--but also the long lost Avatar. Meanwhile, in the Fire Nation Ozai and Azula prepare for the final battle and Ozai crowns himself as The Phoenix King, the ultimate ruler of the world. Disguised as guards, they search the prison, until one of them is revealed. Will they be able to survive the battle with the Fire Nation? But acceptance of their former enemy's intention is not in their plans. Aang worries that once face to face with the murderer, Katara will do something she will later regret.
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. Shockingly to both the them, Avatar Roku and Firelord Sozin had more in common than they thought. Starting with the mastery of his or her native element, the Avatar learns to bend all four elements. Zuko, voiced by Dante Basco, was driven to capture the Avatar to restore his lost honor. Aang was pure-hearted and often struggled with the responsibilities forced upon him as the Avatar.
Elsewhere, Aang and others face off against a new adversary. Meanwhile, still convinced that Iroh and Zuko may be from the 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. With time running out, Sokka needs to decide if he should cut his losses and leave, or try to finish what he started. At the next campground, Zuko asks Sokka about the day his and Katara's mom was killed. They confront it, but Azula emerges and attacks and they are forced to run again. The show followed the journey of one such Avatar, a 12-year-old Airbender named Aang, whose inability to accept his role as the Avatar allowed the Fire Nation to conquer most of the world. That bender is the Avatar.
Toph has been captured and is being brought back to her parents, and Azula has infiltrated the city and is planning on finally conquering Ba Sing Se for the Fire Nation. The Avatar resentment has apparently been inspired by something a past Avatar did to the town. Meanwhile, Zuko becomes upset to learn that he was not informed about a war meeting. His anxiety gets the better of him as he begins to suffer from outrageous nightmares and hallucinations. And who are the strange benders who are trying to kidnap Appa? Zuko has a hard time trying to earn everyone's trust, however, another unexpected encounter might change his chances. . Many believe the Avatar was never reborn into the Air Nomads and the cycle is broken.