In a remote Gothic castle in the Northwest of America, the US military attempt to determine whether a group of apparently deranged servicemen and one astronaut, Billy Cutshaw (Scott Wilson), are faking their insanity. When experimental psychiatrist Hudson Kane (Stacey Keach) arrives to take charge, he is subtly persuaded by Cutshaw and fellow inmate Lt. Reno (who is adapting the works of Shakespeare for dogs) to indulge the men's delusions and engage in extravagant roleplay therapy. As Center 18 descends into insanity, it becomes clear to Sargent Groper (Neville Brand) of the hospital staff, that the new psychiatrist may be more deranged than the patients. Cutshaw challenges Kane to prove the existence of God by showing him one single act of genuine self-sacrifice. Kane accepts the challenge but his mental state is rapidly deteriorating. He reveals to medic Dr Fell (Ed Flanders) that he is haunted by murderous dreams belonging to his brother, the infamous marine 'Killer' Kane. Who or what is psychiatrist Hudson Kane? Will Cutshaw and the other patients be cured?