Kim Junmyeon. He wasn't on vacation, he was just there for business. But when he meets her in front of his hotel room his business venture turns into something much more than he had bargain for. For the only way he can get his business proposal from a highly acclaimed man he must do something he dispise so very much. Something the old man values as top priority - a loving spouse whose always your right hand.

Park Chorong. She was sent to relax and enjoy a well deserve vacation. But she forgotten that the Summer season was Wedding season. Seeing all the happy couples in one place makes her uncomfortable. Especially after finding out that every hotel room is booked to the brim with happy couples on their honeymoon. Except for one room, an excutive suite that has not just one room but an extra one, occupied by the workaholic CEO Kim Junmyeon.