NTSC/Region 0. Ten years ago, twin sisters So Yeon and Hyo Jin (Park Shin Hye) both fell into a river, claiming the life of Hyo Jin and leaving So Yeon comatose. Ten years later, So Yeon finally wakes up. Though she has lost her memory, she is troubled by what she can't remember, and often shows characteristics similar to her dead sister. As she recovers, the past slowly returns - the circumstances of the accident, the sisters' jealous rivalry over So Yeon's husband-to-be Hyun Sik (Jae Hee) - and a series of mysterious murders befalls the village.