"Hong-joo is a third-year Physical Education student who has a crush on her classmate Won. Afraid that confessing her feelings might ruin their friendship that dates back to high school, Hong-joo decides to distance herself from Won. From that day on, she ignores Won's messages and avoids him in classes. Meanwhile, Do-hyun, a senior who has always been interested in Hong-joo, starts to approach her more actively. How will the relationship between Hong-joo, Won, and Dohyun unfold?"