Chrysalis queen of the changelings tried to take Canterlot and then Equestria however she failed at the cost of Twilight's life. All who knew her mourn her loss long after she's gone most of all her brother Shining Armor who can't stop blaming himself for it. While others try to help he thinks he's doomed to fall into despair until one day a mysterious stallion appears telling of a way to bring her back.

Edit: Special thanks to Goldminer23 for editing the story.