AD 865. The fierce Vikings stormed onto Saxon soil hungry for spoils, conquest, and vengeance for the death of Ragnar Lothbrok. Hundr, a Northman with a dog's name...a crew of battle hardened warriors...and Ivar the Boneless. Amidst the invasion of Saxon England by the sons of Ragnar Lothbrok, Hundr joins a crew of Viking warriors under the command of Einar the Brawler. Hundr fights to forge a warriors reputation under the glare of Ivar and his equally fearsome brothers, but to do that he must battle the Saxons and treachery from within the Viking army itself...

989 AD. Alfred the Great’s dream of a united England has been forged by his daughter Aethelfaed and grandson, King Aethelstan. The Vikings have been expelled from York following the death of Erik Bloodaxe, and for two generations there has been peace between Saxon and Dane. A new Viking warlord Olaf Tryggvason seeks revenge for Bloodaxe's death and the slaughter that followed, and has set his sights on a fresh assault on England’s shores. With Skarde Wartooth they set sail for Saxon lands, hungry for glory, conquest and vengeance.

Spring, AD 777. Sigurd Hring, new King of the Svear, is summoning all the greatest warriors of the North to his banner. He invites Bjarki Bloodhand, the famous berserkr, to swear an oath of fealty to him. But Bjarki has already sailed away to rescue a beautiful Saxon princess. Tor Hildarsdottir, sister of Bjarki, now oath-bound to a powerful Svearland jarl, finds herself unwillingly enrolled in Sigurd’s mighty army. When Sigurd Hring arrogantly rejects the overlordship of Siegfried, King of the Dane-Mark, red war is inevitable.

Anno Domini 1040. Christianity has swept unstoppably across Scandinavia, leaving few enclaves of the old ways clinging on to their fading world as King Olof of Sweden works to convert his people. A young warrior, Halfdan, has witnessed the ‘mercy' of the Christian lords, watched his people attacked, his village burned and the Odin stone toppled as heretical. Watched his father cut down by an ambitious Christian jarl and his zealous priest. Among the ashes of his world, he vowed an oath of vengeance before all the gods.

An ancient blade, fit for the gods but tainted with a deadly curse. Bjarki Bloodhand has finally managed to subdue his gandr, the spirit that gives him the ferocity of a bear in battle. Yet losing his berserker prowess may leave him at the mercy of his foes. Meanwhile, his half-sister, the shield maiden Tor Hildarsdottir, has slain two warriors from the personal retinue of the new Jarl of Norrland – and now faces brutal reprisals for their deaths.