Oh Hyeyoung (pronounced as oh-hye-yeong) is a 24-year-old woman who dedicates herself to her job as a bodyguard. She counsels her friends on their dating life but ironically has never dated before. One day she meets 25-year-old Byun Baekhyun (as himself) in a convenience store. Their encounter with each other leave a lasting impression. Fate pulls them together (however unwilling they are) as they are brought together as client and bodyguard. A twist of events occur as the past comes back to