Starbeam Prism was a unicorn who long ago served as a night guard for the Castle of the Two Sisters. She was one of Princess Luna's closest friends at the time, and would have done anything for her. As Luna grew more depressed, Starbeam would try to comfort her as much as possible, but had little effect. Meanwhile, Star was also facing her own inner demons from haunting memories and troubling events. Having few ponies to turn to for help, her world began to slowly crumble, until the fateful night her companion and leader was banished to the moon. Take the journey to ancient Equestria, and discover the path one long-forgotten unicorn chose to take.