Fleeing from Somali pirates, a yacht bearing a young American family crashes into a jungle atoll off the coast of Madagascar, only to face a horror far more terrifying: an experiment run amok has turned the island into the bloody hunting grounds for a new form of life. The single female survivor, rescued by Captain Tucker Wayne and his advanced military team, bears a terrifying secret. She is pregnant and something is already changing inside her.

Halfway around the world, a firebombing at a fertility clinic in South Carolina reveals a group of women kidnapped from around the globe and enslaved to bear children by artificial means. One woman lives long enough to give birth to a stillborn child at a local hospital. A genetic study reveals the child bears a strange abnormality—a triple helix of DNA.

Commander Gray Pierce of Sigma Force and Captain Tucker Wayne must team up with a deadly assassin on a journey from the sparkling towers of Dubai to the crumblin