During the Charlemagne era, missionaries risked their lives to convert Germanic heathens, facing death themselves. Some rules required the death of Saxons who resisted baptism or violated Lent restrictions. Despite the dangers, brave missionaries like Saint Boniface and Lebwin from Anglo-Saxon England continued their preaching, with many being martyred in the process.
This show picks up where Dan's Thor's Angels show left off. In the early Middle Ages Pagan Germanic-language speakers like the Vikings are a dying breed. Many of their contemporaries wish they'd die faster.