200 years ago, there was a catastrophe, one that plunged the once vibrant land of Equestria into a frozen wasteland. Most of the ponies who survived this apocalypse survived by moving into underground cities called Sanctuary Cities, but not all is well.

Now after 200 years, a young mare named Starling has to venture out of her home city and into the frozen wasteland above. What future will await her and what happened to Equestria itself?

No, this has nothing to do with Fallout or Fallout: Equestria.