6 years before the events of Avatar: The Last Airbender, the war between the Earth Kingdom and the Fire Nation has still was raging for nearly a century. In the Fire Nation occupied city of Citadel on the Earth Kingdom East Coast, not far from Ba Sing Se, an orphan boy by the name of "Fluke" finds himself attempting to simply survive the hellish conditions of his city's slums.

The Fire Nation has been defeated at Ba Sing Se. Lu Ten is dead, General Iroh disgraced, Fire Lord Azulon passed, and Ozai inheriting his throne. As the Earth Kingdom aggressively regains its territory and the Fire Nation attempts to assert control, a group of Fire Nation deserters seek to protect those unable to defend themselves, and punish those who abuse their power.