It is AD 312. Rome teeters on the brink of war. Constantine's army is on the move. On the Rhine frontier, Brandulf Rex, a pagan Germanic barbarian, joins the Roman army as a spy and special forces operative. Down in Rome, Junia Flavia, the lovely and pious daughter of a nominally Christian senator, finds herself embroiled in anti-Christian politics as she works on behalf of the church.

As armies converge and forces beyond Rex's and Flavia's controls threaten to destroy everything they have worked for, these two people from different worlds will have to work together to bring down the evil Emperor Maxentius. But his villainous plans and devious henchmen are not easily overcome. Will the barbarian warrior and the senator's daughter live to see the Empire bow the knee to Christ? Or will their part in the story of Constantine's rise meet an untimely and brutal end?

Travel back to one of the most pivotal eras in history—a time when devotion to the pagan gods was fading and the Roman Empire was being conquered by the sign of the cross.