X-COM Pony within

Bradford, Dr. Vahlen and Dr. Shen learn that their Commander is not what she seems to be. Twilight in the meantime has changed a lot during her 4 years in the human world. That's an excuse for her being OOC, btw. And then her friends appear one after another in the X-COM base, in order to get her back to Equestria. (I don't mind if someone copies this idea) C4 quality down sickness