For hundreds of years, there have been stories about Equestria's once great past. Long ago the ponies of the land lived in the sun and were ruled by gracious alicorn princesses. That time is long gone though. Now Equestria is a barren land of ice and snow, with only the signal fires to fend off the windigos and dangerous creatures that now roam the land.

When one of these fires in western Equestria goes out, a disgraced thestral seeking redemption is sent out to investigate. What he discovers could reshape the history of Equestria or destroy it entirely. His journeys forward will take him not only through the frozen wastes, but into the heart of the Manehattan dead sectors.