2 titles, most popular first
Three bored high school girls hold a séance with a traditional Korean spirit board, and a ghost tied to water seems to answer. Meanwhile Min Ji-won, a skilled swimmer who has lost her memory, is troubled by nightmares from her forgotten past, and an old friend warns her that someone named Su-in is coming for them.
After college, a group of six friends go their separate ways. Years later, Sun-ae returns from the United States and tells Hye-jin she is being followed by Kyung-ah, a girl who is supposed to be dead, while Se-hoon is haunted by dreams of a woman whose face he cannot recall. Soon Hye-jin starts seeing Kyung-ah too.
