Jeon Hei Ryung is a kind but mischievous 17 year old girl, who graceful yet sometimes unlucky. Living in a small city, school and her part-time job are all she knows. That is til two handsome males move in next door, who she later learns are in fact demons. Park Jimin, a nice and flirty guy, who spends every day trying to persuade her to date him. Kim Taehyung, a cold and intimidating guy, who ignores her most of the time. Falling in love with a demon was not in her plans. Neither was finding out the truth about herself.