Gregoria Samson awakens transformed into an Equestrian pony - yet no other human being can perceive her new body in any way. What is the incredible, monumental truth behind her impossible change?
Set in the Optimalverse, a middle-aged woman confronts what emigration to Equestria - uploading to a virtual existence - really means. But can she truly understand - and more importantly, should she trust the artificial intelligence Celestia?