Lance Preston and the crew of a ghost-hunting reality show lock themselves in the abandoned Collingwood Psychiatric Hospital for the night to investigate reports of paranormal activity. They quickly realize that the hospital is alive and preventing them from leaving, trapping them in a maze of hallways. As they become lost and terrified by the ghosts of former patients, they start to question their sanity and learn the dark truth behind the hospital's past, filming what turns out to be their final episode.