Michael Duchesne risked his life fighting in a war against rebel insurgents in the late seventies. Now, he must return to the jungles of Central America to free his kidnapped daughter and search for el Registro de Dios, a telling record of man's evolution that has been hidden from the world for two thousand years. Joining the ex-army ranger in his quest are his son, Mitch, and two ambitious, young researchers who have successfully extracted DNA from sacrificial blood embedded in ancient Mayan pottery. Their experiments reveal that a tiny variation in molecular DNA is responsible for startling changes in those who carry the altered gene. Only Dr. Herman Walenz, a rogue scientist under siege by his peers, knows the full impact the mutation will have on the future of mankind. But before he can present his findings, he mysteriously disappears. Michael is surprised to learn that Walenz has left for him a package containing the doctor's controversial work. To validate Walenz's research and unlock the growing mystery, the team must recover the Registro and evade Michael's archenemy, Rodolfo Soldano. What they discover will send shockwaves through the scientific establishment and constitute a full-scale assault on Darwin's theory of evolution.