Alfred the Great's life is going to be trying to deal with this arch nemesis of his these Viking peoples. The Scandinavian version of la vida loca just sort of crossed the channel looking for softer targets. When these Vikings make peace in Anglo-Saxon England and this is the pattern it the violence just crops up elsewhere.
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.