Nightmare Moon has been resurrected, in a body of her own. No longer having to rely on a host, she can attempt to plunge the world into eternal darkness and rule it once again.
Unfortunately, there are issues.
Essentially a prisoner of Princess Twilight Sparkle, Nightmare Moon is taken to Ponyville with the intent of being "reformed." There she is to be forced to socialize with those she should rule, in the hopes of "making friends" and changing her ways.
Will Nightmare Moon be able to break free, regain her power, and fulfill her plans? Will she take revenge on Twilight and the others not only for past defeats, but for putting her through such annoyances? Or will Twilight's plan succeed, leaving the once powerful mare a shadow of her former self? In the meantime, how will Ponyville be changed?
(This is not a filly Nightmare Moon story. Nightmare Moon -- at least technically -- is a fully grown and mature mare. This story is marked as mature because it does contain sexually explicit scenes. However, much like Diamond Tiara of The Royal Guard, it does not focus solely on clop. Chapters that include sex will be marked as such. Tags may change as the story progresses.)