There's no cure for Fluttershy's bat pony status, even after months of trying on Twilight's part. Her regression back seem permanent this time. So Twilight and Fluttershy go to the princess of the night and Luna offers Fluttershy a job as an ambassador for the night guard when dealing with the monsters, the creatures that go bump in the night, and the animals that just aren't very well liked or prefer the dark. Luna also enlists the help of the mayor of Hollow Shades to teach Fluttershy how to be a batpony and their culture, an uptight stallion named Dusk.