After her mother's sudden surgery, Yeong-rye takes a few days off work with the help of her coworkers. Yeong-bae and Yeong-mi visit Sae-ri's house. Jae-pil, who has feelings for Jong-hee, grows closer to her, and Jong-hee begins to see his vulnerable side. When Yeong-rye notices their bond deepening, her own feelings become conflicted.

Jae-pil and Sang-cheol discover that Yeong-rye and Jong-hee are not university students, but bus conductors who attend Hwarang Night School. Feeling ashamed after being found out, Jong-hee begins to distance herself from Jae-pil. Jong-nam tracks down Jong-hee and causes a scene at Cheongah Bus, forcing Jong-hee to go into hiding.

When Cheongah Bus refuses to compensate for a serious accident that leaves a conductor severely injured, the conductors organise a strike. Yeong-rye seeks advice from Hyeon and Yeong-sik about the strike. Meanwhile, Jong-hee learns of Yeong-rye's feelings for Jae-pil and makes up her mind. When Yeong-rye finds herself in danger, Jong-hee steps in to help, putting herself at risk.