The year is 2077. A decade earlier, robot technology had become so advanced that the United Nations, concerned that further developments may lead to the `weaponization' of the human body, passed a resolution banning the use of android technology. Choosing to defy the treaty in order to allow the mega-corporation, Daiwa, to continue its research, Japan became a lone, renegade nation effectively shutting itself off from the rest of the world. Isolated and shielded from all outside communication and satellite surveillance, with nobody having entered or left the country for ten years, Japan has become a mystery to all those living outside its borders.

Fearing that Daiwa may now have taken its bio-tech android programme to the ultimate extreme, a crack US Special Forces Unit is tasked with infiltrating Japan on an intelligence mission. Led by a determined, young female commander, Vexille, the unit hooks up with a band of Japanese underground rebels who have refused to conform to the dictates of the Daiwa Corporation. But what Vexille and her team uncover inside Japan proves to be far more devastating than anybody could possibly have imagined and soon they find themselves fighting a battle that will determine the future of all humanity.