In a world where everyone discovers their soulmate through seeing a blinding white light after skin-on-skin contact, Greg Lestrade is trying to get on with his life. He's getting older, his ex-partner found her soulmate and, frankly, he's just trying to get from one day to the next. But then his soulmate turns out to be the very unlikely Mycroft Holmes who doesn't want to get involved with him. So what is he going to do? He's going to win him over, of course.