When the gang arrives at a suffering fishing village, a mysterious spirit appears to help the villagers. Aang decides to seek out the spirit for her help, but she may be more familiar then he thought. Can Aang solve the mystery of this cryptic spirit and help the town from the Fire Nation?

Zuko, Azula, Mai, and Ty Lee take a vacation to Ember Island. In the process, they come to learn more about themselves and each other, as well as their desires for the future. Arguments rise and fall. Will the group learn to become friends and trust each other? Elsewhere, Aang and others face off against a new adversary. What will this lead to?