A side story to Shadow-Brony's "Once a Shadow".Go read that, because without it this wouldn't exist.

Swift is the only diplomat for the Fugiens Mones, a secret Equestrian organization dedicated to protect the homeland at all costs. He also happens to be one of the most problematic members the Mones has ever had, although he somehow always manages to do exactly what they ask for. However, when a diplomatic meeting goes horribly wrong, Swift must venture into Griffon territory to correct his mistake without any help from the Mones whatsoever.