From the Description:

“The inhabitants of the planet Umea had continued to show resistance when provided with the chance to be assimilated into the Imperium of Pony. And had lately began to show signs of them preparing for war. Their military had began to mobilize and a full-scale assault seemed to be imminent.

The Imperium would have this act of agression dealt with swiftly and with as few casualties as possibly. And therefor the God Empress commisioned the single pony she thought could be up to the task, the ponyarch of the Raven Herd, Derpy Hooves.

The mission was to set fire to the acres upon acres of harvesting fields present on the planet aswell as sabotaging key settlements and strategically important locations. A task which had sounded much easier on paper than it was in action. But Derpy was the best at stealth operations and lightning war, even if she was by herself.

But it had been hard, the natives were a militaristic race, known for their exceptional ability and success in waging war. Derpy put that reputation to test, and even if it was resilient, in the end, it was proven to be wanting.

When the other Ponyarchs arrived on the scene, Derpy had already been there for weeks. And what they were met with was a broken people, pleading for salvation from the being they had come to call, “The Raven”.”

Moral of the story: Don’t fuck with Derpy. She’s smarter than you’ll ever know.