After Sokka and Katara get sick due to being in the storm, Aang seeks out a cure and discovers he needs some frozen frogs in order to get them cured. Meanwhile, Zhao has been promoted to Admiral and he is using the Fire Nation's best men to capture Aang, and he eventually succeeds. All hope seems lost for Aang and his friends, but there may just be a glimmer of hope when a strange blue spirit masked figure comes to Aang's rescue, but who could it possibly be?

Aang feels neglected as Katara and Sokka reunite with Bato, an old friend of their father's from the South Pole. They begin to reminisce on their times in the past while they wait for a message to arrive from their father; in which Aang believes Katara and Sokka will abandon him and go out to find their father should the message arrive. However, when the messenger gives Aang the message to give to Bato, Aang betrays his friends in a way Katara or Sokka could never imagine. However, when Zuko recruits a bounty hunter named June to track Aang down. His friendship is put to the test, as he must deal with the fact that he betrayed his friends while defending himself from yet another fight.