For a time, it looked as though Earth would be completely subsumed by Equestria. The magical barrier advanced to overtake the entire planet, consuming all it touched. Then suddenly, it stopped.
Earth and Equestria have combined into a strange hybrid-world, two different planets in one. In the heartland of the United States, things are beginning to return to normal for the humans there as it seems the threat of imminent ponification has passed. But for the ponies of the Conversion Bureaus, it means something else entirely...