In the futuristic world of 2050 where sky vehicles, space buses and colonies on the moon exist, two super powers are emerging. New Germany's mechanized army is rolling across the ex-soviet states conquering all they oppose. The United States has extended its southern border to Columbia after a bitter war with Mexico to become the other super power. Kirby Sloan, an ex-Houston Police officer turned private investigator, is looking into the disappearance of the parents of Gayle Evans. Her father, Stanley Whitaker, is the creator of the Sentinel Security Systems used by the US military to protect its defense systems and by private industry to protect corporate networks, power grids, sky and air traffic control and other vital infrastructures. Sloan finds himself in the middle of an international conflict between the US and New Germany when this seemingly ordinary case suddenly goes terribly wrong.