Aang discovers that he must talk to Avatar Roku during the Winter Solstice to see what he must do. But with him being in the heart of the Fire Nation and Zuko on his trail wanting him captured, it proves to be a very difficult task.
Aang takes Katara and Sokka to his favorite place he and his old friend used to go to as kids. But when they break the law and get arrested, Aang must go through a series of difficult challenges made by the King in order for them to be let go.
The gang comes across a town where Earthbending is illegal and the Fire Nation has taken over. Katara also discovers an earthbender Haru that secretly practices his abiliy in private. Haru gets arrested after using his earthbending skills to save a man’s life so Katara gets herself arrested in order to save Haru.
The gang stumbles on a town with people that at first don’t trust foreigners, until they discover who Aang is and are treated as guests of honor. The Fire Nation has tracked them down and Sokka trains with a female warrior named Suki.