AD 781. Pagan Saxony groans under the Christian yoke. The invincible armies of Karolus, King of the Franks, occupy all this freedom-loving land and every Saxon must submit to baptism and pay tithes to the Church, or face death by beheading. Duke Widukind, leader of the Saxon rebels, is sheltering in the North, beyond Karolus's reach. He hopes to persuade Bjarki Bloodhand - once a famous berserker, but now a father and family man - and his fierce sister the shield-maiden Tor, to join his revolt against tyranny. But Bjarki has eloped with Widukind's sister Edith, who was betrothed to Abbio the Crow. In revenge, Abbio uses seithr to strike at Bjarki - a powerful spell to drive him insane. Can Bjarki resist the long slide into madness? And will Widukind finally liberate Saxony from the Franks?