Trouble is brewing in Syria, on the eastern frontier of the Roman Empire. With the troops in a deplorable state, two experienced centurions, Macro and Cato, are dispatched to restore the competence of the men and determine the loyalty of the officers. But a more serious challenge awaits them. Bannus, a local tribesman, is brewing up trouble amongst the religious followers of Jehoshua and preaching violent opposition to Rome. As the revolt grows in scale, instability spreads throughout the region. Macro and Cato must stamp out corruption in the cohort and restore it to fighting fitness before the eastern provinces are lost to the Empire forever!