Kwon Jung, a stiff and inflexible college student, can’t stand his handsome and popular classmate Kwak Hyun-woo — the very same guy who toyed with and dumped the senior Jung-ha secretly had a crush on.

Whenever they meet, they clash like cats and dogs.

But one day, after Jung-ha picks up a mysterious necklace, everything between them changes.

“It might sound crazy, but… I’m a demon.”

Hyun-woo reveals that he’s actually a demon — and that all the magic stored in the necklace has been absorbed by Jung-ha.
If he doesn’t get that power back, Jung-ha will die.

The only way to return the magic… is through physical contact.

With no other choice, Jung-ha ends up living with the demon.