Nightmare Moon looked around. She was on the Moon, still stuck in the body of Luna, the pitiful princess whom she had now taken over. Well, if she was going to stay on the Nightmare Dreamscape, she'd better make herself comfortable, now where were those no longer peaceful inhabitants of the Moon. Well, your story can be set in Tartarus if you like, but here is Teen alternate universe, so as long as Equestria isn't involved, it goes here.