Princess Celestia, Guardian and Ruler of Equestria has many secrets. Not that she intentionally hides them. Some things just don't come up in conversation. But there are other things that must never be known by anypony. Only a select few may know Equestria's True Past. Among those are Princess Twilight Sparkle, still adjusting to her new life as a Princess and having a thirst for knowledge that surprises even her former teacher. But how will Twilight react when she learns the truth?