16 year-old Charlotte Winston finds a inconspicuous door on one of her night trips all around her once-a-hospital school. She had been doing this for years, but she hadn't seen this door on her trips, ever. Now as her curiosity fires up and, instead of following her instincts to run away, she opens the door but does not come in. Then she saw something move in the dark. She closed her eyes in terror, but when she opened them again, she found herself in a dark room all alone. She doesn't know where and how she was getting out of the place.