Chen Xiao, a PhD in modern manufacturing, accidentally travels back to a rural village in Northeast China in 1978 after a laboratory explosion. The original owner's father mysteriously died three years earlier, and his own uncle is determined to seize the industrial notebooks his father left behind. Facing threats from within and beyond, Chen Xiao uses his advanced technical knowledge and his father's notes to make a fresh start by repairing tractors, outsmarting the villains and making them pay for their misdeeds. Confronted with China's backward industrial conditions, Chen Xiao gathers a core team known as the 'Six Hammers of Baishan' and sets out to overcome one technological challenge after another. Along the way, he wins the admiration and support of Lin Wanqiu, a highly educated young woman. As his career flourishes, the mystery surrounding his father's death remains unsolved.