When Aang leaves to aid Zuko with the Kemurikage, Katara and Sokka return to the Southern Water Tribe by themselves. Katara is shocked to find that her beloved village has become a bustling city, with none other than their father, Hakoda, in charge! A Northerner named Malina seems to be behind this change, pushing the North and South to be more unified...but what are her true goals?

Hakoda works to tighten the security of the city, while Katara's distrust of the Northern newcomer grows, and Gilak's crew reveals troubling information.

As Avatar Aang and his friends confront an ancient spirit determined to destroy a town on land sacred to the Air Nomads, Toph and Aang find themselves on opposing sides in a battle of gigantic proportions. If Toph and Aang don't put aside their differences, there's more at stake than just their friendship!"--Cover.