While guarding the fast food restaurant left behind by his parents, Qin Hexiang was viciously suppressed by his peers. His assets were frozen, he was in debt worth millions, and his life hit rock bottom. A late-night encounter allowed him to open up the passage between ancient and modern times, and he encountered Qin Shihuang, who was critically ill and deeply involved in internal and external troubles during his eastern tour. At that time, famine spread throughout the Qin Dynasty, nobles rebelled, and powerful ministers conspired, and the country was in danger. Qin Hexiang used potatoes, special medicines, and modern materials as bargaining chips to reach a transaction across time and space with the First Emperor. He relied on the ancient treasures of the pre-Qin Dynasty to counterattack and become rich, and established a firm foothold. He further extended the life of the First Emperor, eliminated traitors, quelled disasters, silently guarded the national destiny of the Qin Dynasty, and made up for the regrets of thousands of years of history.