Water
Earth
Fire
Air
Long ago the four nations lived together in harmony, then everything changed when the fire nation attacked.
Only the avatar, master of all four elements could stop them and restore peace and balance, but when the world needed him most. He vanished.
Ten years have passed since the young air avatar's disappearance and a grueling stalemate grips the world. Desperate to prevent the avatar's return, the fire nation sought to wipe out the Air Nomads, scattering the few survivors to the four corners of the world.
Now the last of the airbenders are in hiding, forced to conceal their bending and once proud tattoos just to survive. But even still the fire nation has not given up its search, placing bounties on any remaining airbenders and dispatching inquisitors across the world to hunt down any lead no matter how far-fetched. From the most desolate of ruined temples to the remotest of villages. For the fire nation knows full well that if even one airbender has survived.
Then the avatar will return to save the world....