When Twilight visits Celestia's private hall of stained glass windows, the portrait of an ancient astronomer catches her eye. Who was this pony? Why was she so important to Celestia? And why does she look so familiar?
As a princess, Cadence is used to the slog that accompanies any fundraiser, though it quickly becomes clear that Twilight doesn't have the same issues. That doesn't mean that Cadence can't help in her own way however.
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.
Twilight finds it a bit difficult to reconcile Celestia's playful new manner with the regal teacher she knew for so long. Once she does, however, the benefits are plain to see.
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.
Celestia and Twilight are in a relationship. Twilight wants to meet Celestia's parents. Celestia, understandably, is terrified. After all, it's always awkward when one's parents aren't exactly ponies at all.
For the past year, the four rulers have gathered in the unassuming town of Ponyville for meetings of the highest secrecy and order. If the ponies of Equestria knew what really happened behind these doors, they would probably switch to democracy.
Celestia is struggling to come to terms with her true feelings for Twilight. Unwilling to watch her sister suffer under apathy and indecision, Luna takes it upon herself to help Celestia confront her newfound feelings.
Princess Celestia is sometimes an enigma. What is it with her and tea? Why doesn't she drink cider? And how will she react when Twilight Sparkle confesses that she has a crush on her former mentor?
Celestia has seen a lot of terrifying things, but nothing she has ever faced is more terrifying to her than this: Telling Twilight's parents she's in love with their daughter.
Celestia is in love with Twilight. And has been for a long time. Yet she doesn't tell Twilight. Why? Because she's waiting for the perfect moment. She's got time after all.
One night a year, on the Eve of the Summer Sun Celebration, Princess Celestia is sad, at least according to Twilight's observations. She has a plan, a boardgame, and is determined to try to cheer up her mentor.
Twilight has agreed to host Princess Celestia for a three month vacation. When she meets her disguised form, she sees her teacher in a whole new light.