The Roman world was shaken. The empire is threatened by barbarian Mongols, a conspiracy is brewing in Rome itself, dangerous weapons are being created in its laboratories secretly from the Senate, and even their own gods are about to turn away from Rome... And then one former gladiator, and now the heir to the Roman throne, Senator Aelius goes to fight with barbarians. And another winner of the Games, Junius Verus, is trying to uncover the mystery of the death of the Roman special forces cohort “Nereid”.