Drama with an awesome mc and romance

Aight I know awesome mc can be interpreted in different ways. If anyone has seen Doctor Stranger, the mc is a genius doctor but no one knows about him. He shows up and shows all the elites how to be an actual doctor. I want a mc who is really talented in his profession ie doctor or cop. Would be more interesting if it was police or something. I want him to show up out of nowhere and show everyone how cool he is. Romance would be a plus.