Underwater archeologists have discovered a lost, encoded manuscript linked to Saint Theo Erkenwald, a seventh century Benedictine monk. When a team of scholars unravels the secrets embedded in the medieval document, they realize the long-hidden knowledge threatens the entire world with a disaster of biblical proportions. The threat grows even more urgent when the details of their discovery fall into the hands of a shadowy organization with sinister motives. Racing to trace the leaked data, the team must combine their modern expertise with the buried secrets of Saint Erkenwald himself if they are to prevent a modern apocalypse.