In the human world,"A Crystal Prep’ student by the name of Moondancer found some notes of Twilight Sparkle’s research on Magic before her transfer to Canterlot High-School, and decide to complete them by resuming them as her own, repeating Sci-Twi’s mistakes.

Sunset Shimmer wake up with memories stopping in the middle of the fight, back in Equestria, unsure of what transpired. And if that wasn’t enough, she’s now an Alicorn, and back before Twilight moved to Ponyville.

(Story title might change in the future.)

As Nightmare Moon came on stage, declaring her intention of bringing eternal night, a bat-pony filly ask her an important but unexpected question: "If there is no more day, when do I sleep?"

Sunset wasn’t the first students of CHS to turn into a demon. Back when Luna were a students herself, she once became the demoness known as Nightmare Moon and had to learn to control that part of herself.

Now Sunset need to learn to do the same, and who better than the Nightmare herself?