After waking up and finding himself back in the 1980s, Chen Dong faces a sickly daughter, a disappointed wife, and a debt of 600 yuan that must be repaid within three days. Determined to make up for his past mistakes, he relies on his skilled hands to repair old radios, fans, and bicycles. Starting with a small roadside repair stall, he eventually opens Dong's Repair Shop. Facing stock shortages, forged receipts, and schemes to seize his home, he uses his craftsmanship and principles to turn his life around, finally giving his wife and daughter a stable, comfortable life.