Honey is sweet. Tiffany is sweet. How fitting that she would like it.   Yet he didn't think she'd like it to the extent of drinking it every day. Eunhyuk thinks that it's a gross-tasting milkshake, definitely not fitting of a good-tasting girl.

It doesn’t matter how charming, handsome, or kind he is. There are boundaries which cannot, should not, and will not be crossed.   Tiffany desperately tries not to succumb to these feelings gnawing at her stomach, squeezing at her heart. She tells herself she won’t ever call the object of her devotion anything other than his official title: Mr. Hyukjae.

With the help of the beautiful Jessica, rookie detective Jonghyun is able to solve the first big case of his career. They decide to team up and solve many more cases, despite the concern of chief inspector Tiffany. In this partnership, a mutual affection is developed. But how long can this love last, when one is living and one is a ghost?