Before that of Twilight Sparkle or Applejack or any of the elements of harmony's incarnations. Before that of even their parents or grandparents. Over 1000 years ago when the Princess' where still young. Luna and Celestia ruled Equestria together in harmony and hadn't had any wrongs or sins committed in their land. But that is about to change. And all because of one small emotion living in Luna. Jealousy.
My first fic so be nice. Hope you like!