When one fateful search through the Everfree Forest leads Rarity to a secret library inhabited by the spirit of an ancient alicorn princess, she realises that it may be time to start believing in fairy tales.
As kids, Twilight and Sunset were best friends, but a tragic accident cut their friendship short. Years later, Twilight investigates the incidents at Canterlot High and comes face to face with what appears to be a literal ghost from her past.
Rarity has always believed that there exists a prince for every princess. And she's not wrong about that. She's just not right for quite the exact reasons she thinks she is.
Celestia loves Twilight Sparkle. That is a fact, an indisputable constant of the universe. What that love means, however, is much less certain. The love of a teacher, the love of a friend, or the love that Celestia dares not name.
"When I read their letters... I think about how temporary everything really is." A lonely princess pores over her studies in a frigid castle, desiring nothing more than the warmth of an old friend.
For Twilight, the increased lifespan that came with princesshood had forced her to outlive her friends, but thanks to Rarity, she will learn that centuries could be lived in but a single day.
Nights in Canterlot are for sharing secrets. Ten years have passed, and the six friends have begun to walk their own paths. A burdened princess meets a friendly face among the crowds.
After spending Nightmare Night in Ponyville, Luna decides on how to reward the six mares who defeated Nightmare Moon and saved her from herself: Marriage.
Rarity discovers an old tradition involving the exchange of felt dolls as a sign of affection. This sparks a brilliant plan to play matchmaker with her friends, and between herself and Twilight. But brilliant plans never go as expected, do they?
Lovers have their reasons. To Twilight Sparkle, the reasons she loves Celestia are perfectly obvious. And to Princess Celestia the reasons why she can't love Twilight back are equally obvious.