Starlight Glimmer has just seen the error of her ways and has moved into Twilight's castle. She is grateful that Twilight gave her a chance but would be surprised when her first friendship lesson came along, and what it would entail.
After Princess Twilight declined becoming the sole ruler of Equestria, her life returned to normal for the most part. It is while she is thinking about who gave her the advice to decline the role that her feelings come to the surface.
Something goes wrong with the portal between Equestria and the human world, leaving Twilight trapped for a few months. That wouldn't be so bad... if she wasn't also a child
After his sudden death on his way to school due to an idiot driver, Ken Williams wakes up to find himself as a strange quadruped with wings and a horn.
Mister Lonely Heart is a self-styled "Grievance Counselor", a changeling who mimics ponies that his clients have issues with. When Twilight Sparkle pays him a visit, he finds out how painfully neurotic the Princess of Friendship really is.
Princess Twilight has a hard time adjusting to having a full-time bodyguard, especially when their personalities clash and she struggles with the burdens of her new royal status.