The Roman empire is at the summit of its splendor. Cestus, a young slave boxer is constantly fighting and improving his style. Suddenly, an emperor's messenger visits him and announces that the emperor Nerone will host a fighting tournament from all over the world and orders Cestus to become part of the Regional Qualifiers. Full of determination, Cestus begin his journey towards the final combat arena determined to win the tournament and earn the ultimate prize, his own freedom!!