In this tale of war and intrigue, Arn, a young swordsman, meets Cecilia, the love of his life, but a cruel and jealous world soon forces them apart. Cecilia is imprisoned in a convent and Arn is sent away to the Holy Land as a Knight Templar, to fight in the war raging between Christians and Muslims. Their painful separation causes their faith in God and his goodness to waver, though their faith in each other and their confidence that they will one day be reunited remains strong. The young lovers fight to survive and through their love for each other, learn to confront evil and overcome the physical hardships that a world of anger and betrayal has placed upon them.