Na Jung Sun and the VIP management team of the Sung Un Department Store work hard to satisfy the VIP customers. Junior Assistant Song Mi Na works also hard but it's not easy to be a parent at the same time. Manager Lee Hyun Ah reinstates and a new employee is assigned to the team. After a long day, Jung Sun receives a strange text message about her husband, Park Sung Jun who is also the head of the VIP team.

Jung Sun starts to suspect Sung Jun of cheating on her after she got the strange message. Sung Jun often gets phone calls from Assistant Manager Cha late at night, and things happening around Jung Sun make her doubt Sung Jun more. The VIP team begins the inspection on the concierge services and finds out cases of illegal use of VIP services.

Jung Sun catches Sung Jun lying at the hotel. Sung Jun tells her that's it's all over but Jung Sun falls into a great shock by the fact that he really betrayed her. From then on, Jung Sun can't stop doubting everyone. She goes frantic with distrust and tries to figure out who Sung Jun was seeing. Mi Na leaves the office for the meeting as soon as Sung Jun also leaves for the other meeting, but Jung Sun realizes there are no meetings today.

Yu Ri takes charge of the leaflet draft but after the meeting with another team, she hears another team's Deputy head talking bad about her. Jung Sun tries to act as usual with Sung Jun but she feels lost and broken inside. The loan sharks visit Hyun Ah and threaten her until she can reach her mother. Jung Sun tracks down the person who sent the text message about Sung Jun and she gets an unexpected result.

Jung Sun is shocked at finding out that Sung Jun has been cheating on her. She refuses to talk to him at home. And she thinks that she shouldn’t have followed him to the hotel that night. Meanwhile, the VIP Management Team has given a new project that involves a popular online video content creator.