Four years after breaking up with Pei Jingmo, Xu Nanyin runs into him again at a class reunion. Memories come flooding back, and although she doesn't want to get tangled up again, she can't resist Pei Jingmo’s persistent pursuit. As their feelings grow stronger, the misunderstanding that led to their breakup four years ago finally comes to light.

The drama tells the cheerful and passionate youth of lawyers working in Yeouido every day.

A story of survival unfolds as model student Yeon Si Eun transfers to Eunjang High School with the trauma of standing up to violence for his friend but failing to protect him in the end, and confronts even greater violence because he cannot lose his friend again.