A person has their scars from the past. Sometimes they're manageable... and sometimes they will haunt you for the rest of your life. Such is the case for a group of young people. Each of them have had experiences that pushed them to the brink of their mental capacity. Even with psychological evaluations, they struggle to get on with their lives. Unfortunately, they will be tested by a master of fear, who people have simply dubbed Jack, after Jack the Ripper. He plays with his victims' minds before ending their lives. A select group of people are now locked in a psychology department building, and unless his only victim that got away turns himself in, they will all be killed by the morning, with one of the patients being killed off every hour. As their minds and reality are twisted, they will be forced to come to terms with their pasts, lest they suffer at the hands of a man who will break them with new fears they cannot even imagine.