Rome, AD 68. Nero has committed suicide. One hundred years of imperial rule by the descendants of Julius Caesar has ended, and chaos rules. His successor, Galba, dismisses the incorruptible Germans of the Imperial Bodyguard for the crime of loyalty to the dead emperor. Ordering them back to their homeland, he releases a Batavi officer from a Roman prison to be their prefect. But Julius Civilis is not the loyal servant of empire that he seems.

Four centurions, two Batavi and two Roman, will be caught up in the intrigues and the battles that follow - as friends, as victims, as leaders and as enemies. Hramn is First Spear of the Bodyguard. Fiercely proud of his men's honour and furious at their disgrace, he leads them back to the Batavi homeland to face an uncertain future. Alcaeus is a centurion with the tribe's cohorts serving Rome on the northern frontier - men whose fighting skills prove crucial as Roman vies with Roman for the throne. A wolf-priest of Hercules, he wields the authority of his god and his own fighting prowess. Marius is a Roman, first spear of the Fifth Legion: a self-made man who hates politics but cannot avoid them in a year of murderous intrigue. Aquillius, former first spear of the Eighth Augustan, like Hramn, is in disgrace for refusing to dishonour his oath of loyalty. But their paths will lead them to opposite sides of an unforgiving war.

And Civilis, Kivilaz to his countrymen, heroic leader, Roman citizen and patriotic Batavi, will change the course of both the empire's destiny and that of the centurions.