Qin Yu is reborn in the 1980s with his supermarket, initially believing it's a dream. His quirky actions attract the attention of the higher-ups. To make up for past regrets with Li Meng, he battles against powerful figures using modern technology. As his skills catch the eye of the government, Qin Yu represents the country at a global tech expo, defeating rivals and breaking through technological barriers. Ultimately, he chooses a quiet life with Li Meng, while his legendary story lives on.