It's a perfect day in the life of Twilight Sparkle. Ponyville's chief librarian has everything she wants: her books, her studies, a faithful dragon assistant, and the opportunity to go visit Sugarcube Corner on a beautiful afternoon, hanging out with the best friends that a young unicorn could ever ask for.

And yet, in spite of all this, Twilight has the distinct feeling that something is missing...

Over the course of several years, Rarity has achieved a fabulous career, contributing to both Equestrian fashion and the Ponyville community. She is admired by her clients, envied by her peers, and cherished by her dear friends, proving that she's a dependable shoulder to lean on.

Then one day, a mysterious pony visits from out of town. She wishes to meet Rarity, but not to thank her.

Applejack has always struggled to make ends meet at Sweet Apple Acres. After the chaotic events of the Grand Galloping Gala, she returns home to find her farm experiencing a stroke of good luck. Applejack celebrates her fortune with all her friends, all except for one. Rainbow Dash has gone missing, and Applejack decides to find out why.

Tragedy can change a pony's life for better or worse. But sometimes, deep feelings of loss, anger, and unfulfillment can build up to the point of being unbearable, even when things are finally starting to look up.