"At first we had thought it was a prank…"
Raising as the children play, and as the princess of the night visited ponyville. The Demon castle rose while the heroes are distracted. Ofcourse they at first pay it no mind, until they see it the next day. A quick letter and some confused princesses later, the group decides to head inside the castle.
Twilight, thinking they don't need the elements, allows Fluttershy to stay home and watch the cutie mark crusaders.
Two days have passed, Fluttershy is beyond panicked, but her nightmares had kept her frozen in fear. That is until a mare named Sonia Belhoof appears at her door step, asking for help. Unable to help herself, she agrees to help. Now with the fate of her friends, and the possibly last request of a pony guiding her forward, she makes her way to the castle.

The forest, was swollen with darkness, as if it would rob away all of her courage, and only Luna's moon could provide that fleeting ray of hope. A great legend, was about to begin…
[YEs yes, ripped that from Lament of innocence.. and yes I liked that game.]