Spike and Diamond Tiara share an accidental kiss, not knowing how to feel about it. Diamond starts to tease how Spike will never get a Cutie Mark, soon Silver Spoon and Spike start to hang out more causing Diamond to flare up in jealous
Fleur de Lis moves to Ponyville, after finding Fancypants cheated on her, then got her shunned by the Canterlot elite, and slowly becomes infatuated with a certain yellow pegasus. However, she seems to have come down with hoof in mouth disease
As Twilight's starting to learn, being a Princess comes with certain responsibities. Ceremonies to attend. Functions to host. And of course, being properly kidnapped, on schedule, as contractually obligated -- wait. What?
Get nosey with Celestia? Check. Marry Celestia? Check check. Run and defend a prosperous country, be a Prince, lead millions in wisdom and might, and not commit a huge social faux pas in high society? Gonna have to get back to you on that.
Flitter thinks Fluttershy is the weakest pony in the world. Flitter has never confronted what Fluttershy's job really means. Nopony ever wants to or should. Now Flitter has to. And 'weak' will turn out to be exactly the wrong word.
Having realized that the duration of Discord's "reform" may exactly equal his only friend's lifespan, the palace sends Fleur to assist Fluttershy with acquiring a social life and guarantee a next generation to adore. (What could possibly go wrong?)
As far as the worst squad member in the short history of the Crystal Guard is concerned, every new day is the one when he'll finally be fired. Because the only thing Flash Sentry truly knows about his life is that it shouldn't have brought him here.