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.

Tensions are high during Isabella’s wedding preparations, and fearing an attack, King Philip asks Landry and the Knights Templar for their help in protecting the palace.

Landry is kidnapped and tortured by a mysterious group; a Knight is expelled from the Templars; De Nogaret builds an army; Princess Isabella discovers who betrayed her.

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.

Landry seeks the help of Jacques de Molay, the Temple Grand Master; Queen Joan plots her escape.

Vastly outnumbered, the Templar Knights must fight for their lives in a battle with the Red Knights.