Captain Robert Frobisher returns to London from a voyage with the intention of finding a bride, getting married and starting a family, but on the same day he receives a new assignment from the chief of the British Secret Service - to go to the Crown possessions in West Africa and track down a gang of slave traders operating in Freetown. At the same time, Eileen Hopkins arrives in the settlement to look for her missing brother and begins her own investigation. Robert decides to get rid of the overly curious girl, but soon becomes convinced that Miss Hopkins is smart and resourceful, and the information she has obtained is priceless. Eileen becomes Robert's companion on the mission and goes with him in search of the slaver camp. Deadly dangers await them in the jungle, but the love that arose in their hearts is stronger than fear. Robert and Eileen escape the clutches of criminals and indulge in unbridled passion, but their mission is far from complete...