Nat Sharpe's need for a liver transplant drives his belief that casulaties in a civil war would be the perfect potential source of donors. Battling for his life and the lives of others, he is soon faced with ethical and moral questions as well as angry virologists who will go to great lengths to halt the project. In the end, a mission to save lives may cost lives as his quest causes one of his main allies to choose between the woman he loves and a dying man.