A changeling is sent on a mission to infiltrate Equestria. However, away from The Hive, he learns a terrible truth about his own kind and their Queen. "Putting things right" will be far from easy.
A huge alteration in Equestria's past results in Dr Whooves and a stranger trapped on opposite ends of an alternate timeline. A timeline where Celestia never defeated Nightmare Moon. Although a 1001 years apart, they have to fix things together.