Cato and Macro are on their way to Rome. We know from the tombstones of centurions that such men served in a variety of units across the length and breadth of the Empire. Our heroes can expect to travel to new lands and encounter a wide range of enemies in the future. But before Cato and Macro secure appointments in a new legion they must first overcome the rumours and suspicions surrounding their recent actions during the war against Caratacus. They must prove themselves worthy of being reappointed to the ranks of Emperor Claudius’ legions. Ahead of them lies a perilous undercover mission to secure a sacred artefact that will determine the destiny of the Empire.