Discord wants to enjoy the Summer Sun celebration with the rest of Ponyville. Sure, everybody's already dead by the time he arrives, but it's not like that's going to stop him.
This story takes place in an alternate universe where Pinkie Pie, know known as Pinkie Pi and Twilight Sparkle, in this world named Twilight Sparkler, have opposite personalities.
It's a normal day for Fluttershy! *Yay* And she has things to do and ponies to meet! Sure, things might not be the same as usual, but she can endure. Right?
It's been a good three months since Screwball moved in with Fluttershy. The yellow pegasus starts becoming the chaotic filly's mother, until Celestia comes by and wants Fluttershy to reform Discord.
Bizarre comedy disguised as something else. Humans are being transported to Equestria through no fault of their own. The only polite thing to do is to help them settle in, and that includes trading in their old money for Equestrian bits.
Adagio Dazzle hatches a plan to use Valentine's Day as a means of conquering the school. Sonata, meanwhile, runs off for reasons no one really understands.
It's not bad enough Sunset Shimmer has to get a band together to save Canterlot High from zombification; she's still not over Flash Sentry! What's a girl to do?