One night during a crescent moon, Fluttershy has a strong craving for apples, turning her into Flutterbat. But the transformation does more than revert her; it changes her into a masked monster. And now Braeburn is stuck in the barn with it.

The Iron Stallion Competition is held annually by both Princess Luna and Celestia for any and all stallions, with Big Mac as victor this year. When he receives an invitation to the Palace, little does he know what they have in store for him...

Princess Luna has always guarded the citizens of Equestria from their nightmares. But when she goes into heat, who will protect her when she attracts the blackest and darkest Nightmare of all?