Will Raimon's and Yolanda's love survive the ravages of a siege, her enforced betrothal to Raimon's enemy, and the growing divisions within their beloved Occitan?
Raimon has escaped the pyre and carried the Blue Flame, the true spirit of the Occitan, to the mountains above Castelneuf. There he dreams of Yolanda and gathers more people to his cause. But his resolve begins to fail as he is besieged by the Catholic Aimery and the Cathar White Wolf. In Paris, Yolanda, believing Raimon is dead, resists marriage to Sir Hugh, who is building a war train to topple Raimon and bring the flame and the Occitan under the rule of the French King . . .
In a blazing finale, as Castelneuf burns, all sides are forced to reconsider what they are willing to sacrifice for the Occitan, for power and ultimately for love.