A dark and terrifying discovery awaits Twilight Sparkle under the great ruins of the Everfree Forest. Will Twilight be able to cope with the shock, and will she be able to comprehend the terror that she faces?

Dash finds an amnesia stricken Fluttershy outside her door. But is that really all that's wrong with her friend? She seems normal but more forward. What could possibly be going on in Fluttershy's head?