It is two years since the return of Princess Luna, and Ponyville has been hit with the latest in a rash of disappearances that have stopped and started over the course of about ten years. The police are baffled, as no traces of the ponies has ever shown up, but rumors of a serial killer have been floating around the station. However, when a pony appears in the police station covered in blood, they find out that the rumors have more than a little truth to them, and that the horror stories have only started.