The story of a high school girl, Gong Hyeon-ha, who becomes the target of bullying at the beginning of the semester. To her dismay, Ji Hye-jin, a girl admired by everyone, reaches out to her. When Ji Hye-jin extends her hand, the bullies stop, and Gong Hyeon-ha develops deep feelings of gratitude towards her savior. However, one day Gong Hyeon-ha discovers that Ji Hye-jin has a tall and handsome childhood friend, Yu Gwon-young. This revelation triggers intense jealousy in Gong Hyeon-ha, leading her to become captivated by their peculiar relationship.