Kim Seong-mi

Jeong-eun is dispatched to a subcontracting company. She tries to fit in, but her co-workers aren't comfortable around her and she's completely new to field work. Despite all that, she wants to stay on for a year and then return to headquarters, no matter what. Thanks to a newbie's help, she slowly adjusts to her new workplace.

Some time after completing his mandatory military service, a man receives a distressed call from one of his subordinates, who's also an old classmate.