At a prep school, a secret horror begins to unfold as the students begin to die.
Hwang Dae-woo is an elite with zero experience on having a romantic relationship. One day, he meets a lovely, sophisticated woman and falls in love with her. Then, he encounters a terrifying secret about her.
Detective Kang gets involved with a drug business to pay the medical bill of his comatose wife. Min-woo confesses to Kang that he has killed his wife, who knows his past. Slowly, Kang realizes his wife's incident and Min-woo are connected.
