Arn Magnusson is born in 1150, in Western Sweden. he grows up to become an educated young man and a skilled warrior, and meets CECILIA, the love of his life. Then a cruel and jealous world forces them apart. Cecilia is imprisoned in a monostery. Arn is sent to the Holy Land as a Knight Templar, where war is raging between Christians and Muslims. Arn and Cecilia both have to struggle to survive, to learn how to confront evil and overcome physical hardship. Their painful seperation causes their faith in God to waver - though not their faith in each other, and their conviction that they will one day be reunited. When Arn returns home, he has to fight for his love and what has become his mission: to unite Sweden into one Kingdom.