Psychiatrist Joon Sang is a well-known doctor. He is level-headed with his patients, but he's got a painful past. He'd witnessed his wife kill herself because she was raped. He'd suffered insomnia along with guilt and sadness until a beautiful girl Ji Soo comes along. She tells him every man who's loved her died and that someone was watching her. She seduces Joon Sang. A detective suspects Ji Soo to be involved with a recent murder case and asks Joon Sang for her medical records.