The year is 49BC. Gaius Julius Caesar leads the 8th Legion and is marching towards the greatest city in the know world Rome.
Caesar is approaching the end of his term as Governor of a large Roman province stretching from the south of France to the Balkan Peninsula.
The position has been very lucrative and has allowed him to raise a strong and loyal army and expand his power base. However his enemies in the Senate have ordered him to disband his army and return home to Rome.
Caesar has not been granted Imperium, the ancient right to command troops within the city of Rome. Crossing the boundary of Rome (marked by a river called the Rubicon) while leading troops without Imperium is illegal and carry’s the punishment of death.
The 8th Legion now approaches the Rubicon and Caesar has a choice to make.