Everyone dreams of having their dream wedding. For Im Dohyun, her parents dream of her planning a dream wedding. As an only child of two famous wedding planners, it’s expected of her to be good at it—unfortunately the stars aren’t on her side. Thanks to countless mishaps due to her inefficiency in planning, she’s ready to give up but her parents disagree. In order for her to be ‘fully’ out of the business, her parents will test her skills in one last wedding.

This wedding—dubbed as the wedding of the century—is between Byun Miran and Yong Kijoon, broadway star and actor. Of course, this wedding should be the wedding of the century and it’s all up to Dohyun to make it happen. However due to her lack of skills as well as the glaring distraction named Byun Baekhyun, how can she ever plan the so called wedding of the century?