Jamie was being stood up by Jaebum on their wedding day. On desperate attempt to save Jamie's face and reputation on the public, Seungyoun was forced to marry Jamie with a promise that they will divorce six months after. What will happen if one of them want their marriage just the way it is and wants to broke the 6th month promise?

in which seungyoun already debuted in X1 and Jimin is his girlfriend, they spent time cuddling and being cute together in X1 dorm. But then they got caught.