The 100 year war was ended and the gang must come together for one last quest, to find Zukos mother. Along the way Katara and Zukos feelings for each other only grow stronger but neither of them are willing to tell Aang or Mai.

Ba Sing Se, the City of walls and secrets, held yet another. Within the walls of the vast city, an alliance most unholy had formed. Jet and Hama. Together they were working on plans to end the Fire Lord's life, and unbeknownst to Katara she would be helping...whether she wanted to or not.