In twelfth-century Scotland, far removed from the courtly manners of the Lowland, the Winter Isles are riven by vicious warfare, plots and battles. Into this hard, seafaring life is born a boy called Somerled. The son of an ageing chieftain, Somerled must prove his own worth as a warrior. He will rise to lead his men into battle and claim the title of Lord of the Isles - but what must he sacrifice to secure the glory of his name? The Winter Isles...