Assistant Manager Lee Jaeyoon secretly harbours feelings for Senior Manager Choi Jihak from the HR department, who had been kind to him as he struggled to adjust to the company. After handing over his resignation, he runs into Senior Manager Choi Jihak and his family at a fall festival.
In a moment of confusion, Lee Jaeyoon confesses his feelings for the married Jihak, but things take a weird turn when he ends up stealing Choi Jihak's wedding ring, resulting in quite the eventful day.