A teenage boy arrives at a firehouse in Ohio with a terrifying message. A charming and eloquent preacher in Cleveland gathers together a group of believers determined to bring on the end of the world.

A young woman has a horrifying encounter with a real-life vampire in a Florida vacation spot. A quiet small town in New England is shaken when investigators suspect a group of prostitutes is performing rituals to worship Satan.

Chicago police find themselves plunged into a world of savage crimes and occult rituals. Then, in a chapel in Toledo during Christianity's holiest season, someone butchers a nun in a murder with satanic overtones.