A Commissar of the Imperium of Man finds herself working as a diplomat for a rapidly expanding multiversal society headed by ponies. She won't bend the knee just yet, even if peace is on the horizon.
Welcome to a different sort of Equestria, there is no Nightmare Moon or Princess Celestia, No elements of Harmony and no bad guys. Just normal ponies doing normal pony things. Like sleep in bushes, read the thoughts of dragons, and believe in ghosts.