After checking the conversation between A-rang and Ji-young, Jae-yeol runs to Hee-jin, worrying that she would be fooled by bad guys again. However, Hee-jin thinks what Jae-yeol does is cross the line and doesn't listen to him. Out of concern, Jae-yeol asks Ji-won for help. Meanwhile, Hee-jin finally gets to see the real side of A-rang.

Hee-jin tells Jae-yeol what happened that night, thinking he would be embarrassed about it. However, Jae-yeol doesn't get startled by it, and he confesses his feelings again. Hee-jin is still in doubt, but unexpected events make her think about him again. Meanwhile, Yeo-reum, who is a popular sports announcer, comes to school, and it seems like she and Jae-yeol have a history.

Hee-jin and her friends find out that Jae-yeol and Yeo-reum were a couple a few years ago. Hee-jin doesn't show it to others, but she's bothered by it. Jae-yeol tells Hee-jin that there's nothing between him and Yeo-reum, and this makes Hee-jin relieved. Watching them, Ji-won gets confused about his feelings toward Hee-jin. Meanwhile, Yeo-reum comes to school to see Jae-yeol again.