Charlemagne had many children with his wives and concubines. He kept his daughters at home, including his favorite daughter Emma. Emma fell in love with her teacher Einhart. One night they were discovered and punished with marriage. Years later, during a walk in the forest, Charlemagne got lost and found shelter with an elderly couple - it was Einhart and Emma. They reunited happily and returned to the castle, where Einhart documented Charlemagne's biography. A cathedral was later built on the site of their chance meeting, containing Einhart and Emma's joined graves.