Arn, the son of a high-ranking Swedish nobleman, is educated in a monastery and sent to the Holy Land as a knight templar to do penance for a forbidden love.

Arn Magnusson remembers, as a fearful crusading templar, his youth in fractured Sweden's West Gotland. He and his brother Erskin were friends with king Erik's son Knut, until a neighboring warlord ...

There's a whole world under the surface and only Ron has any idea about it.