For centuries, the Vikings have swept out of the Norse countries and fallen on whatever lands they could reach aboard their longships, and few could resist the power of their violent onslaught. They came at first to plunder and then to settle, an encroachment fiercely resisted wherever they went. Such was the case in the southern lands of Ireland. En route to the Viking longphort there, known as Dubh-linn, Thorgrim Night Wolf and Ornolf the Restless stumble across an Irish ship.

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.

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...

AD 916. In the Orkney Isles, a young woman flees her home to save the life of her unborn child. Eighteen years later, a witch foretells that evil from her past is reaching out again to threaten her son. Outlawed from his home in Iceland, Einar Unnsson is thrown on the mercy of his Uncle, the infamous Jarl Thorfinn 'Skull Cleaver' of Orkney. He joins forces with a Norse-Irish princess and a company of wolfskin-clad warriors to become a player in a deadly game for control of the Irish sea.

Will, son of Harry, is about to join one of the freebooting mercenaries who serve the Black Prince in Gascony and Spain. Soldiers of fortune, they fight for pay and for loot. Circumstances mean that he comes to the attention of the heir to the English throne, Prince Edward, and is chosen as the bodyguard for his sons, Edward and Richard. When the Black Prince dies before his father and his elder brother, Edward, also dies, a young Richard of Bordeaux becomes heir to the throne, and Will has a greater responsibility than he expected.