Julien Allais, a French Catholic, prays for only one thing: to kneel before God in the Holy Land of Jerusalem, far from his home in Constantinople, the capital of the Christian world in AD 1096. Joining the silver-clad Crusaders arriving from the west to free the Holy Land seems like the answer to his prayers.

Young and untrained, Julien is soon captured, abandoned by the knights he had trusted. Despite what he was told, his Muslim captors are not Godless fiends. Ahtmar, a boy near his own age, is among his captors, and Ahtmar's sister Zahra tends to Julien's wounds. As Julien's feelings for Zahra and respect for Ahtmar grow, he questions everything he thought he knew. The Jerusalem they describe is a bustling city ruled by the Turks for the sake of all residents, no matter their faith. It doesn't need to be freed – it needs to be protected from the Crusaders who will destroy it in the name of their faith.

As Julien and his captors travel to Jerusalem, a forbidden love between Julien and Zahra is born. This love will change them both. Will it have the power to change a world at war?