After being imprisoned on the Moon for 1,000 years Nightmare Moon has returned. Twilight and her friends went to stop the Nightmare Pony, but only to have their plan fall flat. The Elements didn't work and now Nightmare Moon is in a constant struggle with her sister, Celestia causing a rift among ponies. There are now ponies who follow and serve Nightmare Moon, among them being a pony called Scimitar. She serves Luna closely, as a guard, and as a friend. A war is raging on and Scimitar must do what she can to protect her precious Princess of the Moon, even if it costs her life.