Biblical research investigator Kemp Hastings sits quietly in the back of a classroom and absorbs the lecture from Dr. Darlene Gammay, her first public session since walking out of the university two weeks ago in a cloud of mystery. As the biblical scholar wraps up her lecture and watches Hastings approach her, Dr. Gammay has no idea that he is about to change her life forever.

Hastings has been tasked to authenticate a holy parchment recently found in the tomb of a Cistercian monk, hidden away for nearly five hundred years. After he engages help from Dr. Gammay, she inadvertently touches the ancient manuscript with her bare fingers, setting off a chain of holy, unnatural events that leads to the eventual discovery of a strange tattoo emblazoned across her shoulders. Now embroiled in an ancient mystery, the couple travels to Cairo to consult with a madcap museum curator who, unbeknownst to them, has already devised his own twisted plan.

In this intriguing biblical tale, chosen guardians of some of the most treasured items in the universe embark on an intrepid journey from a university classroom to Egypt and finally to Northern Scotland, where they are forced to battle underworld forces determined to remove one of them from existence forever.