A student becomes a recluse in response to her best friend's suicide and locks herself in her room. She believes that someone is in the room with her. Her alarmed family hires a psychologist to intervene.
as Jeong Soo-na
as Choi Yoon-mi
as Jeong Se-jin
as Grandmother
as Gwan Ri-in
as Lee Ha-jeong
as Han Song-i
