Nightmare Moon and Nightmare Rarity return to Earth. Nightmare Moon aims to cause eternal night and Nightmare Rarity as well, but she also intends to try again to conquer Nightmare Moon. Will she succeed in winning Nightmare Moon's heart this time?
So, it appears the rumors are true...DJ Pon-3 and even Rarity have been bitten by bat-ponies...vampire ones! Vampire bat ponies are now common in Equestria, but who would have thought that two heroes would have been affected by them?!
Twilight and her friends arrive on the moon to defeat the Nightmare forces and rescue Rarity, but it was too late as now Rarity has become Nightmare Rarity. She scatters all five of them across the Equestrian world. Now they must find their way back.
They knew the risk they took when Rarity's friends tried to free her from Nightmare Moon's hold, and decided to take that chance. Lost and nowhere to go, both the Nightmare and Rarity find themselves in an unfamiliar world.
Rarity has absorbed the Nightmare Forces instead of being possessed by them and shared her new power with Spike, now how does she convince Ponyville and Equestria and the Princesses she's not trying to conquer the world and just wants to help?
Nightmare Night is not something Rarity has participated in since she was a filly-which comes as a surprise after she spontaneously decides to not only dress up this year, but play pranks as well.
With the arrival of a new evil in the lands, a new adventure awaits for the elements of harmony. Though there are turns and twists to every single thing they come across. While friendships are at stakes, fears and horrors become more than true.