Na Jung-sun (Jang Na-ra) and her husband, Park Sung-joon (Lee Sang-yoon), work in the VIP management team that deals with VIP customers in Sung Woon Department Store. She is the deputy head manager while he is the head manager of the VIP team. They lead a wonderful life.
One day, Jung-sun receives an anonymous text message. It says that her husband, Sung-joon had betrayed her. He is having an affair with someone in the office.
Afraid that she will lose everything she has, she decides to find out who the woman that is having an affair with her husband supposedly. In the course of investigations, she discovers secrets of the workers at the VIP management team.
Did she manage to find out who the woman who has an affair with her loving husband? What will happen between her husband and her in the end?