Ko Da-rim is a single woman who pretends to be a mother to secure a job. Her boss, Gong Ji-hyeok, falls for her, and a romance develops between them.

以轻快幽默的爱情故事为主线，讲述单身女高多林（安恩真 饰）假扮成妈妈身分、隐瞒真相进入公司打工，却意外与暗恋她的团队主管孔志赫（张基龙 饰）卷入一连串职场浪漫插曲。