Long ago, Avatar Korra had failed to defeat Amon and save Republic City from the Equalists. The benders fled to their respective nations and were seperated once more. Thus the five nations, now counting the Equalist Republic City, lived in peace for many years. However, it wouldn't be long before a new war would start. The Spirit War.
Each of the four elemental nations worshipped a different spirit. The air tribe worshipped the wind spirit Aori. The water tribe worshipped the wave spirit Nami. The earth tribe worshipped the earthquake spirit Jishin. The fire tribe worshipped the hellfire spirit Okibi. Each spirit wanted one thing, power.
However, at the center of all of this was a greater evil. An evil spirit named Fuzen had manipulated the spirits into waging war upon each other. In all the chaos, Fuzen took over Republic City, ridding the world of the Equalists. The remaining non benders were soon under his control and transformed into the Akumu, his own personal army utilizing Equalist gear.
It was the new avatar from the earth kingdom's job to end the Spirit War and defeat Fuzen and the Akumu. The avatar won't be alone however. He/She will meet many friends, bender and nonbender alike who will help the avatar master all four elements. They will need the help of the spirits of all nations to defeat this new threat, but can they unite them before the war tears the world apart?
To keep the amount of benders balanced, I will currently only accept 2 of each type of bender, 2 Team Avatar non benders, and 2 Akumu. The avatar counts with the earthbenders. I'll add one more to all of them if this becomes popular. You may reserve a type of bender if you want, as long as it is not striked out on the list below: