Wada Miyako is the tenth-generation heir of the ancient Japanese confectionery "Wadayama". To maintain the family tradition, she must marry before she turns thirty, or the business will be inherited by her uncle. Despite being cute, Miyako is overweight and not considered beautiful, which makes men shy away from her. However, she meets Chen Datian from Taiwan, who's searching for Wada's secret recipe. To protect her family business, Miyako proposes a fake marriage till she turns thirty. Will Miyako be able to protect her family business and will her fake relationship with Chen become a real romance?