The CMC is bored out of their minds with nothing to do on a lazy summer afternoon, so they decide to drop in on a friend to see if there's anything fun to do there.
Everypony thinks that Queen Chrysalis escaped capture, but Discord's captured her and holds her prisoner in his home dimension. She's going to get reformed by the Master of Mayhem. Eventually. Maybe. Theoretically.
Mister Lonely Heart is a changeling "Grievance Councelor", who imitates ponies that his clients have problems with. Applejack wants to say a few choice words to a relative. A dead relative.
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.
Treachery sends Princess Luna tumbling into the Everfree. Stuck, she copes to live among its grisly inhabitants. Survival is not an easy task, she can tell...
Derpy's life takes a whole new direction when she is given a once-in-a-lifetime opportunity. But where will this new journey take her, and who will she be at the end?