Ocellus is trapped in a palace infested with a brood of love-starved changelings and their queen who are intent on using her only way home as a means to invade her world.
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?)
A small but growing number of changelings now live openly among ponies. Many ponies are welcoming. Others are concerned. And nobody, from the new Equestrian changelings to the Princesses themselves, knows how Queen Chrysalis is going to respond...
Twilight Sparkle is transferred from Canterlot's elite police force to the boring town of Ponyville. She expects this to be the end of her detective work, but she couldn't be further from the truth.
Death is the end of everything. Unless you're Pinkie Pie. In which case, Death will do anything to keep you from dying, so he doesn't have to deal with you. Ever.