Chapter 20 Siege on the North Part 2

Sokka, Katara and Yue follow Zuko to save Aang. In the Spirit World, Aang learns the identities of the Moon and Ocean spirits, and that they are in danger. As Aang returns to the real world, he is saved by Katara. Meanwhile, Zhao succeeds in capturing the Moon Spirit, the source of all Waterbending.