It's been a peaceful time in Equestria, everypony was living well in harmony. Yet, a catastrophe beset Canterlot, one fine day. Soon after, the rest of Equestria could not survive for very long with the two most important sisters no longer living, their magic and immortality not even being able to protect themselves from the unimaginable cataclysm.
Only time will tell how much life the rest of Equestria has left…