Nightmare Moon, formerly called Princess Luna, casts a spell that should, in theory, let her leave her moon and return to Equestria. When the spell misfires she finds herself in a strange new world, surrounded by strange new creatures. After a few weeks of fighting in the Arena she meets a group of unlikely heroes that are on a mission given to them by the Emperor himself. She embarks on a journey that will take her through the pits of Oblivion itself and forge new friendships along the way.
But will she be able to stand up against Mehrunes Dagon and his Mythic Dawn cult, or will the power of the Lunar Princess fail her when she needs it most?