Jin-a, a 35-year-old woman fresh off a breakup and dealing with a stressful job, reunites with childhood friend Jun-hui, who returns to Korea after working overseas for three years.

One of Jin-a's coworkers takes a liking to Jun-hui; Jin-a's mom begins to worry because Jin-a isn't preparing to get married like others her age.

Gyu-min tries to convince others about Jin-a's feelings toward Jun-hui; Jun-hui suspects that Jin-a still has feelings for Gyu-min.

Jin-a falls deeply in love but remains suspicious about the state of her relationship; when a chance to take a business trip presents itself, she volunteers to go.

Swallowing her guilt, Jin-a spends the night at Jun-hui's place. Back at work after the business trip, she is called to Director Nam's office.

Keeping his relationship a secret is beginning to get frustrating for Jun-hui. Later, President Jo asks the female employees to list their grievances.