To protect the logistics park left by their parents, the calm and strong Shen Qingxia and her demobilized younger brother Shen Pojun drive a heavy truck loaded with rice, cotton-padded clothes, and medicine to escape debts, accidentally time-traveling to Beiyou City of the Great Chu. Using modern supplies, the sister and brother save the desperate deposed crown prince Chu Tianhan, and turn the tables to get super-rich through cross-time-space trade. Afterward, they use electric batons, searchlights, tractors, drones, and steel heavy trucks to beat back barbarians and overturn the muddle-headed monarch, helping Chu Tianhan establish the Great Xia, and opening a new prosperous era with industry, agriculture, and education.