Fan Casting Avatar: The Last Airbender

Long ago, the legendary Avatar kept the world and its four nations at peace with each other. However, the Avatar disappeared one hundred years prior and has not been seen since. During that time, the tyrannical Fire Nation used the opportunity to wage war on the other three nations, seeking to conquer them. One hundred years passed, and people began to lose hope that the Avatar would ever return and bring peace back to the world.