Ponyville has disappeared. Or, from its inhabitants' point of view: the rest of Equestria is gone. Twilight has no idea what's going on, and neither does anypony else. Nor do their new, not-quite-human neighbors - and the fact that they're still a good distance away from any other civilization is probably quite a good bit of luck.

In Equestria's place is a strange world - the dawning world of nuclear post-apocalypse. The Pyri Communion and its cities, the vast wallworks of the Wolfreich, and the great Eastsea merchants of Gotland; mutants and robots, friendlies and hostiles, freaks and monsters, and the remnants of the Olden Age - humans, the heirs to the apocalypse that they brought upon themselves. Even now, hundreds of years after the Catastrophe, nobody truly knows what happened, how to survive the aftermath, or what really, really dwells in the depths of the deadly Forbidden Zones.

The world is picking up pieces from a still-burning wreckage, and now yet another piece has been thrown into the storm. Will the ponies survive, and at what cost?

Svin-äte-mig, nu möken blir det åka av!