Book 2: Earth – Chapter 1: Release the Power
Synopsis: Aang and company arrive in the Earth Kingdom and are welcomed to a military outpost as guests following their departure from the Fire Islands. Aang meets with General Fong, who proposes that Aang forgo learning to bend earth and instead only use the Avatar State to defeat the Water Tribes, being impressed with what he's heard of it. After several failures at attempting this, Fong pretends to have his men slaughter Appa, which finally triggers the Avatar State. The forces of the outpost take cover as the power begins to tear the place apart. After being calmed down, the group leave to find Aang a master to teach him how to be a powerful earthbender, and begin to way to the city of Omashu. Meanwhile, Pakku and Kanguq are captured by a group of benders under the command of Nutha, a former student of Pakku before his banishment. The two are able to escape, but Pakku gets a slash on his face in the process that leaves a scar on his chin.
Book 2: Earth – Chapter 2: The Path to the Future
Synopsis: Aang, Mai, and Ty Lee meet with a troupe of performers who are able to guide them on a mountain path towards the city of Omashu. Meanwhile, Pakku and Kanguq meet Niyok, a waterbender who has exiled herself from the tribes due to their actions. It turns out Niyok is leaving to meet up with the performers at a stop on the path, as she is a new member and had only been away from them to get some supplies. Kanguq accompanies Niyok to the stop and notices Aang from afar before running off. After everyone gets back to the journey, Aang gets injured from a rockslide he protects the others from and Niyok uses her waterbending to heal him. The two become fast friends afterwards, despite Ty Lee and Mai’s discomfort. One of the performers does a one man show where he recounts the legend of the first earthbenders. The traveling party then makes it to Omashu, only to see that it is now under attack by a massive Water Tribe legion.
Book 2: Earth – Chapter 3: The Siege of Omashu
Synopsis: Omashu’s army is desperately fighting against the invading Water Tribe legion. Niyok and the other performers are brought somewhere safer on Appa and then the team fly into the city to try and assist their defense effort. Nutha and her entourage arrive outside the city limits searching for Pakku and finds the performers. It turns out that Niyok is Nutha’s estranged sister and Nutha takes her prisoner. The performers lie and say Pakku went to Omashu, well aware that they have never met him and wouldn't know, which prompts Nutha to head towards Omashu. Aang finds that the king of the city, his childhood friend Bumi, passed away while he was frozen. The new king, Moy, begs Aang to help his overpowered masses escape the invasion. Ty Lee remembers the story about the first earthbenders and a passage of tunnels that changed to trap intruders in their labyrinth. This leads to the earthbenders of Omashu to bend a massive system of tunnels out of the city that they can't be followed from. King Moy and his people leave for safer pastures, but still mourn the loss of their homes. Nutha fails to find Pakku, and plans to leave the captured city, but first recruits an earthbender thug named Zai to her side to act as security to keep Niyok from escaping. She then reveals that she was part of the attack on Capitol City and was sent to the Earth Kingdom after being messaged by Chief Arnook.
Book 2: Earth – Chapter 4: The Resisters
Synopsis: The group meet a small militia of Earth Kingdom citizens fighting the Water Tribes. They are all then attacked by a giant bug spirit that attacks them with a gas that knocks them all out. While unconscious, Ty Lee sees her birth family being killed in a disaster as she is pulled away by a hand, Mai sees Lu Ten crying in agony over the loss of Iroh, and Aang sees a boy older than him teaching a duplicate of Aang how to earthbend. They wake up alongside the also awakened militia members and they escape the giant bug spirit. A member of the militia analyzes their dreams before they leave and suggests that Ty Lee saw the past, Mai saw the present, and that Aang saw the future. Pakku and Kanguq make it to a small village, but their efforts to purchase food is ruined by local criminals harassing them. Kanguq refuses to use his waterbending since it will make people fear and attack them, which Pakku admits is right. To get around this he uses his eye deceiving robe to pose in his persona of the White Iguana Seal to scare the criminals and steal their belongings.
Book 2: Earth – Chapter 5: Attack On Aang
Synopsis: The group find a town filled with people who hate them since they believe all foreigners are spies of some kind. A mob ties down Appa and refuses to free him, which strands Aang, Ty Lee, and Mai in a barn outside of town occupied by some people who got run out of town for being more open to travelers. The mayor of the town figures this out and threatens to kill Appa if one of them doesn't allow themselves to be placed in their jail. One of the men in the barn, Yeun, offers to go in instead in exchange for Appa, only for the mayor to then turn on them and announce that both Appa and Yuen will be killed in a public event that will be declared ‘The Destroying of Evil Day’. The event begins and Aang and Ty Lee save Yeun while Mai and the other barn folk free Appa. The townspeople threaten to kill a child they captured from the barn, only for Nutha, Niyok, and Zai to arrive due to Nutha’s mission to kill Aang, which she only began to try to do after seeing him for herself in Omashu. Niyok is able to meet with Aang during the fight and warn him of her sister’s mission before being captured again by Zai. The gang flee and lead them Nutha and company away from the town, who Yuen chews out for being terrible people after the dust settles before he and the other barn folk leave forever. Meanwhile, Kanguq discovers that Pakku has been stealing things while in his disguise, and Pakku decides to abandon him, deeming Kanguq ungrateful for his efforts to feed them.
Book 2: Earth – Chapter 6: The Beautiful Boy
Synopsis: Aang becomes worried about threats and decides to search for a new companion who can teach him in earthbending. The group arrive in a small city run by a division of the growing resistance movement against Water Tribesmen progress in the Earth Kingdom. Ty Lee befriends a young man named Haru who lost his family and came to the city to join the resistance movement. She introduces him to Aang, who recognizes Haru as the guy from his vision who was teaching him to be an earthbender. A woman of high stature notices Haru and finds him attractive. She has him drugged and taken to her bedchamber to try and seduce him. The three friends learn of this and ask some of the local rebel leaders for help, but they refuse due to the woman being very rich and influential. The three rush to her estate and help wake up Haru. After they all escape, the far from noble noblewoman hires several men who Haru thought were heroes to try and get him back for her. After realizing the very people he wanted to join were so easily swayed by money to do bad things, Haru uses his bending to help fight them off alongside his new allies. He then agrees to begin to travel with them and becomes Aang’s new teacher.
Book 2: Earth – Chapter 7: Found and Lost
Synopsis: After leaving Kanguq and going off on his own, Pakku continues to travel until he collapses from exhaustion outside of a mining village. A kindly woman named Daeng brings him to her home and lets him stay until he is well again. Pakku begins to bond with Daeng’s nephew Phueng, a young miner who finds him fascinating. A rowdy group of men cause an accident that traps Phueng in the mines and Pakku helps Daeng and the miners dig him out, as all the benders in town left to take part in the war effort. Phueng is pulled out but is gravely injured, so Pakku exposes his identity as a waterbender and uses his bending to heal the young miner, while remembering how a woman he loved named Kanna taught him to before he was banished. The entire town reject Pakku and angrily force him to leave, including Daeng who tells him she wished she left him to die.
Book 2: Earth – Chapter 8: Night of the Wild
Synopsis: The newly expanded team begin to be pursued by an enormous animal pulling an armored caravan, which forces them to hide out in a dense, uncomfortable forest. The environment makes it near impossible for anyone to rest, which causes everyone to become irritated and leading to a loud argument between Haru and Ty Lee. Aang leads the animal, which he is able to identify as a polar bear dog, to a rocky area and tries to trick the beast into trapping itself, but is then attacked by two of the caravan’s passengers, who reveal themselves as Nutha and Zai. Niyok tries to interfere and help Aang only for Zai to carry her off while Nutha continues their attack. Aang’s friends arrive to assist, while Zai unexpectedly runs head first into Kanguq while carrying Niyok. Niyok tells Kanguq what is going on and pleads with him to go help. Kanguq agrees before Zai forces him to go without Niyok. Kanguq jumps into the middle of the fight and helps “Team Avatar”, as he calls them, in fighting Nutha. Pakku then appears, as he had been camping out nearby and heard the fighting. Nutha uses the confusion of Pakku’s arrival to hurt Kanguq and escape to regroup with Zai. Kanguq becomes a bit delirious and tells “Team Avatar” to always stick together, which convinces Haru that not running off earlier was the right call, before going unconscious. Pakku yells at everyone to just leave and threatens to attack until they do.
Book 2: Earth – Chapter 9: Teachings
Synopsis: Aang finally begins his earthbending lessons under Haru, but loses faith in himself when he encounters difficulty with the earth element, finding it to be the natural opposite of air. While Haru is trying to help Aang with his worries, Mai ends up trapped at the top of a tree and spends the day missing from the others. The group eventually realize something is wrong and go in search of her. Aang is the one to find Mai and is forced to save the two of them from an overgrown ferret-pig. Haru convinces Aang to use the situation to embrace the attitude and mindset required to learn earthbending, leading to him succeeding. Meanwhile, Pakku helps Kanguq recover before the two train together in styles that will help them in future fights against other waterbenders such as Nutha.
Book 2: Earth – Chapter 10: Fort Igikpak
Synopsis: At an inn at the foot of a mountain, the team meet a man who loots abandoned locations for objects to study. He tells them of Fort Igikpak, a massive Southern Water Tribe military facility that was abandoned after a mysterious disaster. The gang travel with him there, where Ty Lee and Haru find a document hidden away in the desk of a high ranking officer that provides undeniable evidence that Chief Arnook of the Northern Tribe plans have the bulk of his military in the North Pole deployed on a certain day in the coming winter towards the South Pole, leaving the North Pole to be less protected before other forces arrive to refurbish the gap in the troops. Then it is revealed that a giant spirit that has gone mad is what caused the disaster that previously struck the facility. The group, including the man, escape, but are shocked to find that Appa has been stolen by a horde of hunters.