After Twilight delivers a batch of books to Sweet Apple Acres as a gesture of goodwill, she finds that Big Macintosh is not interested in her offerings. Through her efforts to discover why, she inadvertently discovers his most shameful secret.
Twilight has always loved mysteries. Almost nothing could compare to the joy she feels when finding an answer to a question no pony knew. But now she's solved a mystery with an answer she doesn't want, and it's one she can never forget
Twilight Sparkle has lived a full life but now she's a 115-year-old pony lying on her deathbed and waiting to pass on. As her time draws near, she receives a visit from a mysterious mare who has come to seek out the answer to a simple curiosity.