Fluttershy has always been the meek and kind Pegasus loved by her friends in Ponyville. However, there lies a much darker, more sinister side to her and only Rainbow Dash knows this secret. Once an outburst of Fluttershy's other personality has made the front page, Gilda and her father, a notorious crime lord, aim to find potential blackmail material on the shy pony. Another incident helps Fluttershy and the stallion she's had a crush on, Big Macintosh, reveal their feelings for one another.
A week after Princess Twilight Sparkle's coronation and one day after the events of Equestria Girls, Fluttershy is in deep trouble. Rainbow Dash, who has been keeping the other Mane Six in the dark, must save her sister figure both from Gilda and herself. But before the day is done, an Element and friend will be lost... and a new villain shall rise.
Elsewhere, Twilight sees strange, but comforting visions of Sunset Shimmer changing for the better in the human world. And they're all connected with Fluttershy's troubles. In that alternate realm, however, a madman is threatening to alter the future of our heroes forever.
This story is based on one of the best two-part episodes from Batman: the Animated Stories. Mainly featuring FlutterMac, with a bit of SoarinDash and TwiSentryShimmer thrown in. Coaxed into writing this by Shadow051.
All OC's are mine.