For nearly two millenia, ponies have lived in and shaped the Canter Valley region into the perfect breeding grounds for a cradle of civilization. Now, even the weather and topography is largely under their control. But there are a few holdovers from the early days of ponykind. Discord is one such creature, a being of primordial chaos that was around long before even Celestia and Luna. Some dragons that were driven out by the tail end of the Windigo Event that became known as Hearthswarming are another. Yet there is one that many have long since forgotten about. It became little more than a child's bedtime story, and then even a simple campfire tale, told by old ponies from half remembered youths spent cowering under the sheets. The stories tell of a creature of such might and terror that even the Lord of Chaos himself had no power over it. A being whose power dwarfed even the combined might of the Royal Sisters, and who stalked the now terraformed mountain known as Mount Canter. There are whispers of it even now, whispers that say that instead of waning with the stories of its existence, its power has waxed ever stronger, and that it still stalks its old hunting grounds. At night, if you are extremely unlucky, you may have the privilege of playing host to a ghost of the old world. If you do, just remember the tales, remember yourself, and never turn your back. Because every story, told by bedside and campfire since time immemorial, begins the same way.

With the words "Beware the demon of Canter Mountain."