Nanok of Jericho, a warrior of the ancient world, is sent on a quest to recover a mysterious artifact known as the Horn of Epona. Legends claim this artifact can gift horses with extraordinary powers, and a ruler that possesses it could command an army unlike any other. Nanok is no stranger to seeking powerful artifacts, but there is a catch. The Horn lies in another world, a world radically different from his own. A world called Equestria...