Junghyuk, an incubus who has become insensitive, could not feed on human essence, leading to starvation. Without any expectation, he went to a club and had a one-night stand with a man who had a different kind of taste to him... "I wonder...how different an incubus is compared to a human." But it turns out that guy is Seohee, the biggest playboy and a junior from the same University! Although he didn't have many options except to become his sex partner, he can't figure out how far Seohee will take this relationship!