I'll give you a rundown of the story which you can flesh out a little if you feel it needs some more meat on its bones.
Nearly a century has passed since the end of the adventures of Naruto. The Akatsuki have been hunted down and eliminated in their entirety and peace has returned to the world, well what passes for peace anyway. Everything is business as usual, the villages going on with their lives, rebuilding the damage, and their armies. The mantles of Kage and Sanin soon passing to a new generation. But all is not as quiet and tranquil as it seems, lurking in the shadows, gathering power and control, is a new enemy, a terrible enemy. Seven ninja of incredible power, skill, and ferocity await the perfect time to make themselves known and strike down their enemies... What is it that they want?
Only the Seven will be told what the groups true motivations are, once we have all seven or at least four, including the leader, Wrath.
If you have any questions just PM me and I'll answer them as soon as I can.