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.

A horror movie about the mysterious happenings that happen to a pair of sisters after watching an unidentified video. Directed by Kim Tae-kyeong, Park Bo-yeong plays Se-hee who tries to save her sister Jeong-mi, her boyfriend Joo Won and Kang Byeol plays the sister.