Avatar Aang continues his quest to master the four elements before the top of summer. along side Katara, Sokka, Momo, and Appa, he journeys across the world Kingdom in search of an Earthbending mentor. Along the way, he confronts Princess Azula, treacherous daughter of Firelord Ozai and sister to Prince Zuko. More powerful than her brother, Azula will stop nothing to defeat the Avatar. But Aang and therefore the gang find many Earth Kingdom allies to assist them along the way.