The vikings are feared as plunderers. However, their longboats also serve for their manhunts. Slaves are often the most important treasure for Norsemen. Three men or four women about equal the worth of a chain-mail. Slavs, Anglo-Saxons and especially Irish Celts are caught and sold into slavery. Ireland is the center of this slave trade and in the Middle Ages, Dublin is Europe's largest slave market. "ZDF-History" reconstructs the true life story of Findan, who was able to flee from viking slavery. It shows how important slaves were for a smoothly working Norse society and what fate awaited the captives.