Twilight Sparkle is hailed as one of Equestria's greatest minds, but she has always felt like there was a missing link that she could never understand. She started to understand a bit more when a horned, winged version of herself fell from the sky.
Shortly after Discord is resealed Fluttershy and her friends are invited by Celestia to recount their experiences. An oddity in Fluttershy's account might just get Celestia's attention.
Tempest Shadow has come to Ponyville to serve her sentence, or start her new life, depending on who you talk to. She's about to get far more in the way of life changes than she ever imagined.
Even with Hearth's Warming Eve around the corner, Tempest Shadow is still haunted by the memories of her actions. Hoping to help, Twilight asks an old friend for assistance. One who'll force Tempest to face her demons, whether she wants to or not.