A trader, Martin Flemming, lives on the island in the Paumotu group with his Hawaiian wife and their three children. One night his two sons go out fishing with a group of islanders, including the family's two much-loved servants. The next morning the boys reach home in distress, telling their father that all the men in the fishing party have been abducted by a Peruvian slave trader. Flemming searches for his friends for ten years, but it is his elder son who eventually finds them in Samoa.