**Time Period**: 53 BC, during the late Roman Republic and the height of the Great Qin Empire.
- **Locations**: The story spans Eurasia, from the Roman Senate to Chang’an and the battlefields of the Western Regions.
- **Premise**: Crassus, one of the three leaders of Rome, leads seven legions eastward. They encounter the westward-marching iron cavalry of the Great Qin within the Parthian Empire. Two great civilizations are about to clash in an epic confrontation.