1000 years is a long time, but some memories... you can't forget. For Celestia, those were the darkest, most terrifying, days of her life. She was only a filly when the battle for her crown began. How did Celestia come to be the fair and just ruler we all know today? If you dive deep enough in the memories of this princess of the sun... you may find your answers.

Rookie Wonderbolt, Rainbow Dash, awakens one night to find herself in an old abandoned castle with no memory of how she got there. In fact, the latest memory she can recall is her flight with Soarin and Spitfire earlier that day and the wild, spontaneous, storm that appeared from out of no where. From there, her memory is blank. How did she get here? Where exactly is "here"? And where are her fellow Wonderbolts?