In a small Korean province in 1986, two detectives struggle with the case of multiple young women being found raped and murdered by an unknown culprit.
A high school student with amnesia tries to uncover what has happened to her. All leading her into deeper troubles ultimately revealing a darkness she could not have imagined.
Two people live in different times. Seo-Yeon lives in the present and Young-Sook lives in the past. One phone call connects the two, and their lives are changed irrevocably.