Lu Chen, a technology mogul who once commanded a trillion-yuan empire, dies with bitter regrets and is reborn in 1987. He finds himself in the body of a down-and-out man addicted to gambling and squandering money, whose wife and daughter are on the verge of being kidnapped by loan sharks. Armed with cutting-edge technology from the future, he starts from dismantling discarded radios, repairs imported machine tools and humiliates arrogant foreign experts, then develops his own giant color televisions and dominates the market. He repeatedly breaks through patent sieges by foreign companies and overcomes supply-chain blockades. Along the way, he deals with local thugs, snobbish relatives, and unscrupulous suppliers, while devoting everything to protecting Su Qingyi and their daughter. Starting from nothing, he establishes Huaguang Group and makes domestic technology surpass overseas giants, finally fulfilling his lifelong wish to make up for losing his wife and daughter in his previous life.