There used to be a monastery that served as the home for the bat ponies, Luna's personal servants. But then Nightmare Moon happened and the bat ponies were forced to hide away from the world and live in secrecy, hidden under a spell. But now that Nightmare Moon has been vanquished, Princess Luna decides to take the spell off and reveal the monastery, along with the bat ponies. The abbot is reluctant and afraid of the outside world and only reveals the monastery for a short amount of time each night.

One night, when Lyra Heartstrings and Bon Bon decide to explore it, something strange happens. A monster, the pony of shadows appears and closes the gates of the monastery. The abbot is even more scared, Luna is furious and our two ponies are trapped.

But what really is the true nature of the pony of shadows? Could it be just a distraction? A work of deceit, to keep the monastery hidden?

Lyra has many questions and she's going to find an answer to all of them.