Long ago, before Celestia and Luna took the throne, two beings from another dark world were thrown into Equestria.

One was a Demon of change, a creature of great evil and malice. The other, a stallion knight clad in silver armor, brave and noble beyond compare. A great battle was fought, and the demon defeated and sent into a great sleep.

One thousand years later, Twilight Sparkle finds an old book...and unleashes the horror a thousand years old.

But for every monster, a great hero will always stand to face it...

MLP:FiM/Warhammer 40k crossover, human tag for a human ponified main character.