Oh Sehun used to be a soldier but something happen and he got dropped. That 'something' somehow changed Sehun to be a stone hearted person. Now he works as a manager at his friend's cafe. There he met Hayoung, the forever bright, spoiled and rich baby girl. Being a spoiled girl she is, Hayoung determined to make Sehun her boyfriend from the first time she met him. Sehun is not opening his heart to anyone, especially to a nobody like Hayoung.