(This story takes place after season 4)
Princess Celestia has been ruling Equestria for quite some time and decides she needs a long overdue vacation. So she creates a plan to have one of her royal guards take her place, an introvert named North Star. He is a simple royal guard who simply never really did much in his life and didn't have much going for him. He was a perfect candidate as nopony would miss him, and his absence would be hidden under the guise of a "secret assignment." North Star accepts and goes through the transformation, turning into a copy of the princess in almost every way. The truth is he feels more alive as the princess and decides that he should try living a little as her. But he also has to realize anything he does will reflect back on the real Princess Celestia and, most of all, he cannot expose her absence.