Seven years have passed since the death of Avatar Kuruk, and the Earth Kingdom's methods have utterly failed to identify his successor. Desperate, Kuruk's former companions Kelsang and Jianzhu decide to try an Air Nomad method.
Nine years have passed since Kelsang and Jianzhu's search for the Avatar - the little girl named Kyoshi has grown up into a not-so-little servant to the next Avatar, an Earthbender named Yun.