It's Judgment Day for the Church as militant members of a secret cult plot to destroy the Vatican and usher in the Apocalypse. These so-called soldiers of God arrive armed with a weapon of "divine power," which they claim is the biblical Ark of the Covenant stolen from its holy shrine in Ethiopia. Their campaign to purge the earth of heretics has begun.

As the cult's hellish agenda spills blood in cities across the globe, panic spreads. Mack Bolan's mandate becomes to neutralize the threat by direct means. His counterstrike begins on the ground in Ethiopia, tracking the murderous trail toward Rome. And he demands the ultimate sacrifice from those willing to kill for their faith—death by Executioner.