Min Ji-won is suffering from amnesia. Her memory slowly comes back, after she discovers that all her friends mysteriously drowned recently. She begins piecing together her past, revealing the event that caused her memory loss.
as Min Ji-won
as Park Jun-ho
as Su-in
as Eun-seo
as Mi-kyoung
as Yu-jung
as Eun-jung
as Detective 1
as Ji-won's Mother
