As Yoon-seong discovers Hyun-jin's secret, Tae-hyung learns that Yoon-seong was her first love.

Tae-hyung gets assigned to work with Hyun-jin and Yoon-seong, while Hyun-jin learns of Tae-hyung's true feelings.

Tae-hyung is shaken by the sudden appearance of his estranged father. Meanwhile, Hyun-jin struggles at work.