Plot: While in Africa, World Health Organization doctor Eva (Cruz) discovers a mysterious disease is infecting the people. Determined to discover the source of this plague, she hitches a ride to war-torn Mali with Dirk Pitt, a treasure seeker working for N.U.M.A. - The National Underwater and Marine Agency. Pitt and old pal Al Giordino (Zahn), following the trail of a gold confederate coin, are searching for an ironclad Civil War ship Dirk believes disappeared somewhere near Mali. Based on the novel by Clive Cussler.