Blaze, a low ranking officer in the Royal Guard, starts to consider that there isn't a point to his career. His duties include watching over empty unused rooms in the Palace, or occasionally escorting the Princess to another uneventful meeting.
However, one night whilst covering for the Library Guards, Blaze stumbles across a long hidden tome. As the guard begins to read, he finally learns the truths behind events in history that he grew up learning, but never really paid much attention to. In a single night, he learns just how much Princess Celestia has sacrificed for all of Ponykind.