989 AD. Alfred the Great’s dream of a united England has been forged by his daughter Aethelfaed and grandson, King Aethelstan. The Vikings have been expelled from York following the death of Erik Bloodaxe, and for two generations there has been peace between Saxon and Dane. A new Viking warlord Olaf Tryggvason seeks revenge for Bloodaxe's death and the slaughter that followed, and has set his sights on a fresh assault on England’s shores. With Skarde Wartooth they set sail for Saxon lands, hungry for glory, conquest and vengeance.

When Senator Aulus Aemilius Galba is tapped to lead the first Roman mission to China, he anticipates an easy path to fame and fortune. Gaius Lucullus sees a bright military future, but his reluctant centurion Antonius Aristides would rather be somewhere else. Translators Marcia Lucia and her brother Marcus were taken from their village in China to serve the Han court, abused and despised, hiding a horrible secret.

Rome, 90 BC. Quintus Sertorius is tired. Weary after eight years of warfare in Greece, the decorated hero longs to reunite with his family and repair their frayed bond. But no sooner has he returned than Rome is thrust into war again. This time, the attackers are their closest allies, the Italian tribes surrounding them. To make matters worse, Sertorius learns his son has joined the legion under the command of a scheming rival looking to exert leverage.

It is 58 BC, and the mighty Tenth Legion, camped in Northern Italy, prepare for the arrival of the most notorious general in Roman history: Julius Caesar. Marcus Falerius Fronto, commander of the Tenth, is a career soldier and long-time companion of Caesar's. Despite his desire for the simplicity of the military life, he cannot help but be drawn into intrigue and politics as Caesar engineers a motive to invade the lands of Gaul.

Rome, 107 BC. Quintus Sertorius just lost his father, and he may lose his home. When his rural village is stripped of its political status, he must leave his family to secure their food and protection from inside Rome's cutthroat government. As he transitions from countryman to politician, he's thrust into the middle of a bitter political war…. As Quintus struggles to gain the aid his village so desperately needs, he approaches Gaius Marius, the uncle of Julius Caesar himself.