During what started as a perfectly fine Lunch, Twilight learns that her friends have somehow gotten it into their heads that she is in a relationship with her mentor and idol Princess Celestia.
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.
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.
Twilight and Celestia don't have dates for Hearts and Hooves Day. Luna looks to change that, and Twilight and Celestia find the date to be more than they bargained for.
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.
My sister is an idiot. Her faithful student, Twilight Sparkle, appears to share her stupidity. Luckily, I am here to lend them a helping hoof. I can't /really/ blame them, though. They're so /adorable/ when they're clueless.
Twilight is angry. Normally, a more calm approach would be useful, but when a pony... When a pony commits THAT, well, the chips are off the table. Justice must be extracted.