Fluttershy has been summoned by Twilight Sparkle to join her on an expedition into the depths of the insoluble wasteland that is the mythical Empire of Labyrinths. The Princess s hoping to establish an ambassadorial commute once they find the rumored civilization, but they are unexpectedly roped into investigating mass disappearances at the behest of the mighty Caesar. Entire villages have vanished, leaving ruins and carnage behind, and all who have pursued investigation never return. The lone survivor speaks of a monster that moves with the shadows, and is born from the evil in your heart. With allies new and old, the ponies set out to solve the riddle of the Black Beast.

In doing so, they’ll find themselves on an adventure without precedent, and they’ll be encountering nightmares beyond imagination.