Third and best known entry in the Mark IV series of fundamentalist apocalypse films. Fundamentalist Christian guerrilla David helps condemned dissidents escape, attempts to subvert the computerized Mark of the Beast, and generally tries to survive as prophecy unfolds in the rise of the Antichrist to the pinnacle of his power and the beginning of God's war on sinful man.

"This prophetic series began with "A THIEF IN THE NIGHT," then came "A DISTANT THUNDER" ...and now the MIGHTIEST of them all... ...as the story continues"