Hyeon-jeong's sister is missing and she fears for the worst. Via her sister's cellphone, Hyeon-jeong learns that her sister stayed in a countryside vaillage. She goes to the village to find her sister and stops at the local police station for help. Because of the little evidence she has, the police refuse to offer help.
Hyeong-jeong then finds a witness who thinks she saw her missing sister near the home of an elderly man Pan-kon. When Hyeong-jeong eventually arrives at the elderly man's home, her worst nightmares are to begin.