Roman Officer Marcus Flavius Aquila embarks on a quest to uncover the truth about his father's lost legion, the Ninth Legion, whose 4,000 members vanished without a trace as they traveled across northern England against the advancing Caledonian tribes. Disguised as a Greek doctor and accompanied by his freed ex-slave, Esca, Marcus ventures beyond Hadrian's Wall to investigate his father's final battle and determine what happened to the Ninth Legion. The journey promises peril but Aquila is determined to retrieve the bronze eagle standard, a symbol of their honor, which he believes was lost in the chaos.
Obsessed with discovering the fate of his father's lost legion, Marcus arrive...