Modern grocery store owner Lu Jingming accidentally time-travels along with his person and delivery truck to a chaotic world eighteen hundred years ago, binding with the "Two Realms Time-Travel System". To return to modern times, he uses fine rice, medicine, and glassware to save Jiang Yue and Lundi Yunzhu, and further takes in three children entrusted by a deceased friend. From reselling supplies, providing relief to refugees, and building Shijia'iao, he compensates for his children and changes his impoverished life in the modern world while gathering people's hearts, accumulating wealth and power in the ancient world, ultimately unlocking firearms trading and embarking on the path of reigning over the troubled times and building a prosperous homeland.