After enduring relentless bullying in high school, Jinhoo strives to leave his loser status in the past. When he discovers that his newest student is none other than his former tormentor, Yejin, old wounds resurface. Despite failing the college entrance exam twice and showing no interest in studying, Yejin is forced to confront her past actions as she inadvertently seeks guidance from Jinhoo. As their tumultuous relationship unfolds, both Jinhoo and Yejin embark on a journey of self-discovery and unexpected lessons, learning the true meaning of empathy and redemption through their shared experiences.