Stumped on the mystery of the locked box, Twilight begins to get frustrated. When Princess Celestia suggests to Twilight to visit her old castle, she jumps at the opportunity to make any type of progress. Little did she know she would get a lot more than she bargained for...

Basically this story is a mix between Castle Mane-ia and Bats!, but with a dark and interesting twist. Join Twilight and her friends as they brave the thousand-year-old castle and unearth its ancient mysteries while escaping a sinister, unknown threat. Will the ponies be able to escape the clutches of darkness? Or will they be morphed into a shadow of their former selves?

Original story idea by DarknessRising