Dateline: 1921--Northern Rhodesia and New York, New York. Lizzie MacTavis is determined to remain with the people with whom God called her to work along the banks of the rugged Zambezi River in southern Africa. Andrew Styles, an anthropologist and explorer, has been commissioned to bring Lizzie back to New York City at any cost. With a fortune at stake, Lizzie is caught between two worlds when she is finally forced to return to the United States and discovers her life is in danger. Will Andrew turn out to be Lizzie's nemesis or hero?