Fallout Equestria: Rewritten

Once upon a time, in the magical land of Equestria, two princesses ruled together, maintaining a relative peace and harmony for all of their subjects. Celestia, the elder sister, raised the sun every day, while her sister Luna guided the moon through all of its phases. In the 11th century, however, the world began to change. The industrial age trailed off intro an era of incredible advances in technology, bringing automation and efficiency to previously unimaginable heights, both in the city, and on the battlefield. What had once been petty fights between nation-states became long, widespread wars.

Griffonia was engulfed in fighting between its countless despots and monarchs. Equestria was pulled into conflict with Zebrica, fighting a war against it for decades. Eventually, the magic of the world was extinguished in one final, short war. The complete power of every nation's arsenal was unleashed upon the world, leaving the few survivors to struggle on the surface without aid. A small number of ponies were selected to live out the remainder of their lives underground, in massive underground "Stables", shelters capable of sustaining ponies for generations, through now long-forgotten technology.

This is the story of the pony named Littlepip, a mare born over eighty years after the nuclear genocide, in stable number two. Two ponies from her stable are about to join her on an expedition into the outside world.