Kim Min-jae, a victim of school bullying in high school, undergoes a complete transformation for revenge. He approaches his past tormentors—Choi Ha-yoon, Park Su-jin, and Lee Min-gyu—along with their mothers, Jung Min-ah, Lee Hye-sun, and Yoon Seo-young, infiltrating their lives and desires through charm and psychological manipulation. Min-jae attempts to heal his past wounds through revenge, but as he gets caught up in an unexpected vortex of emotions, the story spirals toward a catastrophic end.