After suffering from a recurring nightmare, Sunset Shimmer decides to go back to Equestria. There, she discovers that Twilight has been having similar dreams and that a mysterious dark force is at work in Equestria. Sunset, Twilight, and her friends are sent on a mission with the goal of bringing harmony to Equestria once and for all. (Human tag included solely for first chapter; pony all the way after that) (Light SunLight in later chapters)