For Simon, a dangerous race against time has begun…

A Knight Templar returns from the Crusades with a Coptic manuscript which might be the Lost Gospel of Saint John. During his voyage, he stumbles into an ambush. Seriously injured, he arrives in a small village and gives the manuscript to Adalard de Lancrois, the head of a secret order called “The Tradition.” Shortly thereafter, Adalard falls ill and, on his death bed, asks his son Simon to carry the manuscript to a friend. Now Simon finds himself on the road to Campostella, pursued by Pope Innocent III. Superstition reigns all around, with angels and demons poised to take part in the struggle.