A Norse war-chief and his comrades launch a newly built longship from an icy northern cove and sail into a world of sea fights, strange shores, and perilous wonders. Their voyaging brings them into conflicts with rival warriors, encounters with druids and Roman authorities, and the capture of enemy vessels, while supernatural threats and harsh landscapes test their endurance. Along the way they meet Jewish and early Christian teachers whose teachings unsettle established loyalties and prompt acts of sacrifice, producing a gradual moral reckoning that forces a reconsideration of honor, faith, and the old pagan customs amid changing spiritual currents.