Seeking to learn more about her new status, Twilight asks Celestia for information about alicorn lifespans. She gets more than she bargained for: Celestia reveals a dark secret, and Twilight is the best hope for ending more than forty thousand years of tragedy.
Celestia has a dark secret. Yes, again. But it's not what you're probably expecting. What does it take to drive one so kind and noble to darkness? And can Twilight provide the help Celestia is deperate for?