Eun-ji, Mal-suk, and Da-hi live in the dorms of Han-yang Hospital. A series of strange occurrences happen. In the midst of these happenings, Eun-ji surprisingly discovers in her room a necklace she gave to her old boyfriend. In the past, Eun-ji and Baek-chu, the boyfriend, loved each other. But when Baek-chu got severely burned, Eun-ji left him. Baek-chu came after Eun-ji trying to kill her. He missed a step and fell into the ocean and died. With a foreboding premonition, Eun-ji goes to the vill...