Within every one of us, even the best of us, there is an essence of Good, and an essence of Evil. Twilight Sparkle will soon discover that there is a cost for tampering with the two essences

I was prepared for any and every possibility. Even as Twilight gave me that cheesy friendship lecture, I had seen this outcome as well. But it's all planned out. Once I get on her good side, I'll rip her cutie mark away and destroy her future!

Abandoned and starving, Aria Blaze spends her lingering hours with but a wish to sing once more. But she doesn't realize she's not alone . . .

I didn't mean for this to happen. I just wanted to save them. I just wanted my mother back. But now, several ponies are dead. It's my fault. I killed them. My name is Twilight Sparkle. And my name is Nightfall Hyde. This is our story.