Keen Observation, a unicorn scientist and professor at the University of Canterlot, receives a strange delivery from a caravan of traders. A creature whose very bones were created by ancient spirits of evil, in the times before the coming of the Two Sisters, before the founding of Equestria. A creature known as a Husked Stallion. These are his notes, recovered by the Solar guard Acute Senses and overviewed by the protege of the Princess Celestia, Twilight Sparkle.