The soul of military engineer Zhao Che traveled through the late Warring States period and became a declining aristocrat of the Chu Kingdom. He relied on modern knowledge to create new farm tools and improved weapons, and he emerged in the border war and was appreciated by Princess Mi Yao. Facing Qin's eager gaze, he joined forces with Xiang Yan to implement a new military system, but was blocked by his veteran Qu Boyong. Li Si infiltrated the Chu State under a pseudonym to steal technology, while Han Fei offered a plan to unite. Zhao Che used workmanship to build a strong country, used strategy to break the situation, and opened a bloody path in the cracks between the countries. But when the historical torrent he changed backfired, he discovered that the real enemy was not the Qin army's cavalry, but the era itself.