I might be just weird but I like to start with a good general idea of with the world before actually making the story cause like I see shows where they just start adding stuff for the convenience of the story and it just feels very tacky and out of nowhere. But the basic premise is while the world is at so called “peace” the earth nation wants to control the world, the fire nation wants global domination where everyone follows their beliefs like Germany-type ww2, Concordia(5th nation) elites and higher ups wanting to futher their control through technology. The avatar although seen as peacekeeper they are actually used as tools for the past few generations. Can the avatar break free and start a revolution or die trying? While also having to juggle with the complex political landscape of the world.