A man in his fifties accidentally gets transferred to Equestria. He is not like any other man. He is sharp. He has seen a lot. He has done a lot. He was being murdered the very moment he ended up in this improbable world of cartoon ponies. While trying to fit in, he is contemplating a lot his life on Earth and all the wrongs he had done. Being the ever-curious observer, he also begins to test the fabric of the pony nature.
Yes, this is a HiE story. Yes, I know, there are lots of them, but I haven't seen one happening to people in their fifties. Or to be more specific, people from a specific series of movie, namely the Saw series. I always thought that would be hilarious, or at least interesting, but no one has come up with the idea yet (or I have missed it).