Stockholm, in the 1950s. Erik is expelled from the local school for getting into one brawl too many. To protect Erik from his violent stepfather’s reaction to his expulsion, Erik's mother arranges for Erik to spend a year at Stjärnsberg Boarding School, the only school willing to accept him. This is Erik's last chance to graduate to Upper School and he promises his mother, for his and her sake, to do all he can to stay out of trouble.
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 has served his term in the Holy land and returns home to be reunited with his beloved Cecilia. When he returns home, he discovers that political forces tries to separate him and Cecilia - but thanks to queen Blanka they can finally get married. Arn knows that war is looming and with his martial knowledge he starts to build an army at his new home at Forsvik.
