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.
Min Ji-won
Park Jun-ho
Su-in
Eun-jung
Eun-seo
Mi-kyoung
Yu-jung
Detective 1
Ji-won's mother
Eun-jung's friend
Su-in's mother
Detective
Doctor
Doctor
Professor
