He arranges to kill the prince, first by having a crossbowman fire a bolt over a huge distance that shatters the lower half of Zuko's mask and knocks him out, however Aang uses his skills to bend a cloud across the bridge connecting the prison to the other side of the valley, causing the Fire Nation soldiers in pursuit to stop in fear.
With the cloud covering their escape, Aang escapes with an unconscious Zuko into a nearby forest and watches over Zuko until morning, when he leaves to reunite with Sokka and Katara.
Zhao tries again to kill Zuko, this time by rupturing a gas pipe running through Zuko's quarters on Iroh's ship.
Noticing the danger, Zuko manages to survive the attempt on his life with Iroh's help.
Zuko is the scarred 16-year-old exiled prince of the Fire Nation on a quest to find the Avatar and bring him to his father, Fire Lord Ozai, so he can regain his honor.
Seeing the light that appeared from Aang's release, Zuko and some Fire Nation soldiers arrive at the Southern Water Tribe to demand the villagers hand over the Avatar.
However, a masked marauder, the "Blue Spirit", helps Aang escape from his imprisonment, fighting off the Fire Nation soldiers under Zhao's command until the blue spirit realises they will be overwhelmed, at which point he takes Aang hostage to negotiate their way out.
During the prison break, Zhao realizes that Zuko is the masked vigilante.Sokka quickly befriends the Northern Water Tribe princess, Yue.After a few agreements, a waterbending master, Pakku, teaches Aang waterbending.Aang also learns that he was in the ice for a whole century and that the Fire Nation wiped out all of the Air Nomads, including his guardian, Monk Gyatso.In despair, he enters the Avatar State and finds himself in the Spirit World where he encounters a Dragon Spirit.Katara is given a waterbending scroll that she uses to greatly strengthen and hone her waterbending abilities and to help Aang learn as they make their way to the Northern Water Tribe (where Aang will be able to learn from waterbending masters) and liberate more Earth Kingdom villages in the process, weakening the Fire Nation's food and water supplies.