A never ending war with the Changelings that had started long ago when Canterlot had all but fallen, the few who could possibly hold the oppressive horde all but a distant memory of heroes. The elements all but lost. No weapons able to take out their oppressor, Queen Chrysalis.

Kryonotic and his trusty buddy Dusty, venture deep into the lines of the Queen, but that is just another day at the office for them. Can these simple ponies overcome their tasks? Or die at the hooves of the Queen.
(Based after the events of "a Canterlot wedding" except the changelings won and now rule over most of equestrian.)