Nightmare Moon, upon being banished to her rocky, desolate prison, returns to the form of Luna. She is confused and upset, realizing what she has done, and that her punishment is to be permanently banished in the one thing she loved the most. Alone, and terrified, she has to regain her strength and courage to stay alive, and stay sane, until she finds some friends that might just change her sister's plans of eternity on the moon.