In
Medieval France, Crusaders visit the village of
Balian, a blacksmith haunted by his wife's recent suicide after a miscarriage. Their leader introduces himself as Balian's father, Baron
Godfrey, and asks him to return with him to the
Holy Land, but Balian declines. Later that night, Balian kills his half-brother, the greedy and immoral town priest, after discovering that he ordered Balian's wife's body beheaded before burial and stole her crucifix, while torching his smithy in the process. The next day, Balian joins his father's group, hoping to gain salvation for himself and his wife in
Jerusalem. They are soon confronted by soldiers led by Godfrey's nephew sent to arrest Balian, during which many are killed on both sides, and an arrow strikes Godfrey. Reaching
Messina, they have a contentious encounter with
Guy de Lusignan, a prospective future king of Jerusalem who intends to break the fragile treaty between the
Crusader states and
Sultan Saladin with help from the brutal anti-Muslim
Templar Knights. A night before the departure, Godfrey knights Balian, anoints him the new Baron of Ibelin and orders him to protect the helpless before dying of his arrow wound. Balian sails for the Holy Land, but his ship runs aground in a storm, leaving him the lone survivor. Balian journeys the desert toward Jerusalem, recovers a horse which survived the shipwreck, and fights a Muslim cavalier over the horse. Balian slays the cavalier but spares his slave, who guides him to Jerusalem. Arriving in the city, Balian frees the slave, who tells him his mercy will earn the respect of the
Saracens. Balian meets Jerusalem's leaders: the leper
King Baldwin IV;
Tiberias, the Marshal of Jerusalem, who informs him that Saladin has forgiven the death of the cavalier; and the King's sister
Princess Sibylla, Guy's wife and mother to a
boy from an earlier marriage. Balian travels to his inherited estate at Ibelin and uses his knowledge in engineering to help the struggling residents irrigate the land. Sibylla visits him, and they become lovers. Guy and his ally, the cruel
Raynald of Châtillon, attack many Saracen caravans, provoking Saladin to march on Raynald's castle. Several Templars are executed for the unsanctioned raids. Balian defends the castle and the nearby villagers at the king's request despite being outnumbered. After a
fierce battle that ends with the Crusaders defeated, Balian encounters the slave he freed, learning that he is actually Saladin's chancellor
Imad ad-Din. Imad ad-Din releases Balian in repayment of his earlier mercy. Saladin and Baldwin later arrive with their armies and negotiate a truce. After punishing Raynald and Guy, a weakened Baldwin asks Balian to marry Sibylla and take control of the army, but Balian refuses because he doesn't want to be the cause of the necessary execution of Guy. Sibylla tells Balian that a day may come when he might wish he had committed a small evil to accomplish a greater good, and she tearfully departs. Baldwin dies and is succeeded by Sibylla's son. As regent, Sibylla continues the peace with Saladin. Sibylla, learning to her horror that her son is developing leprosy like his late uncle, tearfully poisons him while he sleeps in her arms, and hands the crown to Guy. Guy declares war on the Saracens, attempts to assassinate Balian, who barely survives, and releases Raynald, who kills Saladin's sister. Despite Balian's advice to remain near Jerusalem's water sources, Guy marches to war, and the Saracens overwhelm the exhausted Crusaders in
the ensuing desert battle. Saladin captures Guy, beheads Raynald, and marches on Jerusalem. Tiberias leaves for
Cyprus while Balian stays to protect the people. After a
devastating three-day siege, Saladin parleys with Balian, who reaffirms he will destroy Jerusalem before Saladin can take it. Saladin offers safe conduct to all Christians within Jerusalem in exchange for the city. Under these terms, Balian surrenders Jerusalem to Saladin. The Christians leave Jerusalem. Balian defeats a humiliated Guy in a sword fight and spares his life. Sibylla renounces her claim as queen and returns with Balian to France. A few years later, English knights
en route to the Holy Land visit the village of Balian, now the famed defender of Jerusalem. Balian refuses
the English king's offer to join his army, stating that he is merely a blacksmith. Later, Balian passes by his wife's grave as he rides with Sibylla towards the unknown. An epilogue notes that "nearly a thousand years later, peace in the Kingdom of Heaven still remains elusive". == Cast ==