After being abandoned by his parents, Min-Gyeom, a high school senior, is forced to fend for himself. He resides in a dilapidated area where multiple bizarre attacks occur, characterized by bite marks on the neck and symptoms of bloodless. Following his move, Min-Gyeom goes out for dinner, but inexplicably awakens at his new place with peculiar lesions on his neck. Although he tries to dismiss it, his fellow student sitting beside him appears eerily pale and recognizable.