Lin Feng unexpectedly transmigrated to an impoverished rural village in 1983. As soon as he opened his eyes, he encountered creditors pressing for debt, his daughter running a high fever and on the verge of death, and his wife forced to be used as collateral. At this critical moment, the dual-world reselling space was activated, allowing travel back and forth between 1983 and the 2026 modern wholesale market, limited to one trip per day and carrying no more than 1 cubic meter of inanimate objects. To save his critically ill daughter, Lin Feng utilized the cross-era material gap, exchanged old items for medicine to save lives, and relied on a watch to resolve massive debts.