A Solomon Islands plantation owner, David Sheldon (Tom Moore) becomes ill from blackwater fever following the death of many of his fieldhands from the disease. Joan Lackland (Pauline Starke), a female soldier of fortune, arrives by schooner in the islands. Enlisting the aid of her Kanaka crew, she defends Sheldon from an attack by the natives, led by Googomy (Noble Johnson). Joan becomes David's business partner after nursing him back to health and helps protect his mortgaged property from two greedy moneylenders. In attempting to gain revenge, the moneylenders incite the natives to revolt.[3][4]