Reichfield Manor seemed like the perfect place for a haunted house to Rarity and the others. However, once they start to decorate, they discover something dark lurking in the house. Something that wants them gone.

Deep in the bowels of the Manor lives an alicorn named Falsus. He and his dark attributes had remained under the radar for years, but the recent activity has stirred him up. He tries to chase the ponies out of the manor by possessing Accord, the owner of the house. It doesn't seem to work, so he takes it to the next level: violence.

Using his powers, he takes over Accord for one final push. When Applejack is testing the haunted house to make sure that the equipment works, she gets a bit more then she bargained for.