At the dawn of the fourteenth century, a disgraced inquisitor and his young disciple find themselves at the heart of a struggle for power between medieval Europe's occult powers ... From the roofs of Notre Dame to the most distant abbeys, they embark on a quest for the greatest mystery of all: the Third Testament. Because everyone is ready to fight to the death to recover this testament which could signal the end of an era and have the effect of a new Apocalypse ... Because the Third Testament is the light which will bring those who have strayed back to the true faith.