The NRS is a group spoken of only in hushed whispers by ponies deep in their cups, said to be descended from ancient heroes of old. A gathering of the most talented ponies Princess Celestia can find and covering a bewildering array of skills, their task is unrelenting and fraught with peril, a duty that would break lesser beings.

From battling the darkest of monsters in forgotten corners of Tartarus and hunting mad creatures that would devour ponies whole. Ending wars with a single well worded letter or preventing threats from ever developing, they endure.

Princess Celestia just smiles whenever the topic surfaces, letting the rumors cover the truth; that the Nightmare Recovery Service has done all that and more in the pursuit of their sole mission; to protect Nightmare Moon from the foolish, the ambitious and the merciless, until they can bring her home for good.