After the battle of Acre, we join the Knights Templar in Paris where Landry, a veteran of the Holy Wars, fears that the Order has lost its way. When the blood of a brother is shed, Landry and the Templars are forced to take up their swords again.

On the Pope's orders, Landry and Tancrede travel to investigate the Holy Grail's whereabouts. Meanwhile, the plotting behind the royal wedding becomes deadly.

A pagan helps Landry search his past. Gawain conducts a murder investigation. Princess Isabella is betrayed.

Landry and Gawain meet a mysterious woman who claims she can lead them to the Grail; Joan hears of an attack on Navarre; De Nogaret devises a way to improve his standing with King Philip.

The Paris Temple of the Knights Templar is under siege; De Nogaret plants doubt in King Philip's mind; Queen Joan must decide what is best for Navarre.