After receiving a mysterious demonic African mask in the mail, Ellen Morris is attacked by a "being" she refers to as THE NIGHTMARE MAN. Her doctors and husband, William believe Ellen is a paranoid schizophrenic and needs to spend some quality time at a mental facility for further examination.
John Telliman, a rich lawyer who rides bikes on the weekends, falls into some trouble with a gang of outlaw bikers and gets a case in his possession that will only bring him misery. So...what's in the case, and why do they want it?