Too long... for far too long I've waited for you. You've always saved me from my darkest hour, even though I've never known you. Who are you? How can you make me feel this way when I've never even met you?

If you could turn back time, would you do it, even if you run the risk of making things worse? Park Choongjae took the chance, and found out the hard way that he really shouldn't have tampered with the past.

Sometimes, true angels come without wings. Park Choongjae knows this firsthand, because it has suddenly become his job to help his guardian angel find his.