In his previous life, Su Jianguo devoted all his attention to his five children, neglecting the wife who had endured hardship alongside him for so many years. He even failed to get her injured leg treated in time. Reborn in the 1980s, he decides to make up for his regrets. While finding a way to heal his wife's leg, he draws on his previous life's experience and technical expertise to repair steel rolling machines, fix lathes, and improve raw material formulas. His skills earn him the factory's trust and recognition, bringing him bonuses and a new home. Meanwhile, he leads his entire family in working together to turn their humble life into a prosperous one and reclaim the happiness that belongs to them.