Five years ago, three highly dangerous villains were turned to stone. A year after that, Twilight's protege earned her alicorn wings by defeating some of the most powerful monsters in Equestrian History. Everypony thinks they're gone for good. But one young filly...

... she is not so sure.

That filly is Flurry Heart. Friendless Flurry Heart. Flurry Heart, student of the School of Friendship, terror of everypony except the teachers, nefarious for not being able to control her own powers. What powers, you ask? Flight and magic, any normal creature would reply. But that is not all. Flurry is no ordinary alicorn.

Confronted with a choice between joining evil and fighting against it, she has no answer.

Yet.