Discord and Pinkie try out a new recipe for cupcakes and well...when Twilight returns from Canterlot she finds herself in a Ponyville she can hardly recognize. The Crusaders return from a camping trip to find their sisters and idols beyond obese.

As their friends and family fatten around them, Trixie and Starlight are the only two left who can navigate this broken world and try to find a cure.

What started off as a couple of one-shots set in the same universe is transformed into an apocalypse story. Who knew.