The Time Team travel to a group of islands on the western side of Scotland to investigate a culture known as the "Lords of the Isls" - who ruled the islands 1000 years ago. The team joins a group from the Scottish National University who've been working in the area for some five years uncovering the history of these people. What the Time Team discovers throws the whole excavation into a new light and suggests people may have lived in the area thousands of years prior.