25 BC. Titus Cervianus is no ordinary soldier. A former surgeon from the city of Ancyra, he's now a capsarius—a combat medic. Cervianus is a pragmatist, a scientist and truly unpopular with his legion. The Twenty Second Deiotariana have been sent to deal with uprisings and chaos in Egypt. Yet the Twenty Second is no ordinary legion either. Founded as the private royal army of one of Rome's most devoted allies, the king of Galatia, their ways are not the same as the other legions, a factor that sets them apart and causes friction with their fellow soldiers. 

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.

Will Britain take him in... or mark him as its enemy? Faustus Valerianus is the son of a Roman father and a British mother, a captive sold among the spoils after Claudius’ invasion. When both parents die within a month of each other, he sells the family farm and enlists, joining legendary general Agricola’s campaign to conquer the entirety of the British Isles. But Faustus will have to contend with more than ferocious British warriors and whip-cracking elements. For the bonds of blood can weigh heavy on one’s soul. The call of his mother’s true people.

Britannia 43AD. The last unconquered stronghold of the Celts and a land of gold and slaves. A dangerous place of men without fear, led by mystical Druid warriors, yet still to face the might of Rome in the unrelenting expansion of the empire. Four Roman legions have assembled in Gaul undertaking final preparations for the invasion of Britannia. Two young men are posted to a training cohort under the sadistic tutorage of a battle scarred veteran, Remus. The training is brutal, but eventually the trainees find themselves involved in their first campaign. The invasion of Britannia.

Rome, AD 27 - Gaius Valerius Carbo has returned to the heart of the empire after 25 years of serving in the legions. He just wants to retire in peace. But his friends are gone, his family is dead, and his home now belongs to someone else. When local thugs attack the tavern where he is resting, he finds himself caught up in the fight and inadvertently becomes the new owner of the building - and the enemies that come with it.