NSFW:Descriptive Sex-BdSm: Revised post.

Nightmare Moon demands that Twilight learns how to properly please her princess. Giving Twilight a special book to study Twilight recalls the perfect pony to use it with, Rarity!. Twilight sparkle sneaks out toward Carousel Boutiqe with a shadow following her. What will happen? Will this finally be the best night ever?
Will Equestria be saved? Was it ever even in danger?