Somerled's parentage was noble, of the Kings of Dublin, the royal house of Argyll and the great Ard Ri, the High Kings of Ireland. But when the Norse invaded Argyll and the Isles, his family's fortunes fell along with those of his people. All hope seemed lost when he rose from the mists of Morvern to rally the Gaels, the Scots and the Irish.

Sweeping across Argyll and the Isles like a fast-moving storm, brilliant in strategy and fearless in battle, Somerled began retaking his ancestral lands, driving away the invaders and freeing the people from the Norse stranglehold. In doing so, he would win the title Somerle Mor, Somerled the Mighty, Lord of Argyll, Kintyre and Lorne and, eventually, Lord of the Isles.

This is the unforgettable saga of his path to victory that forged the Kingdom of the Isles and won him the heart of a Norse king's daughter.