There are just some people on this planet that you hate no matter how much you try not to. Even just being in the same room as them makes you want to rip your hair out. For Jung Yonghwa, there is such a person in his life. There is one girl in particular who drives him up a wall just hearing her name spoken. This girl, Seohyun, feels the same way about him. However, is that all there is to their relationship? Yoona, a friend of theirs, begs to differ. When Yonghwa suddenly begins to ask about Seohyun's wellbeing, she realizes something is up. After twisting him up in a sly plan of hers, she forces Yonghwa to do her bidding. What will happen when Yoona leaves those two head strong people in the same area alone? Will a fight inevitably break out or will something else happen?