Princess Celestia has been the sole ruler of Equestria for more than a thousand years. Over those years, she gradually drifted apart from those ponies over whom she watched tirelessly. But now that Princess Luna has returned, and has begun to share the burdens of rule that Celestia has had to carry alone for so long, she is forced to come to grips with the isolation and loneliness that she has brought upon herself. Having kept herself distant from her subjects for so long, she turns to the pony whose friendly nature has already helped to save Equestria on multiple occasions for help and comfort.