Confronted with sickness, captivity, and the testing of their friendship, Aang, Katara, and Sokka labour on with their journey to the Northern Water Tribe. Along the way, they encounter a master Firebender, and Aang tries firebending for the first time...with disasterous results.CHAPTER 13: THE BLUE SPIRIT:Out on his own, Aang is captured and held prisoner by Admiral Zhao. But a mysterious man in the blue mask helps Aang escape!CHAPTER 14: THE FORTUNETELLER:Aang, Katara, and Sokka meet a fortuneteller who can predict anything! The villagers become so reliant on her, they're blind to the imminent danger they are in.CHAPTER 15: BATO OF THE WATER TRIBE:Sokka and Katara reunite with an old Water tribe friend. Feeling insecure, Aang intercepts and hides an important message from Katara and Sokka's father.CHAPTER 16: THE DESERTER:Aang begins learning firebending techniques and ends up battling Admiral Zhao. Meanwhile, Katara discovers she possesses a special power!