Su Nian, a modern aviation mechanical engineer, is the ground handling equipment maintenance supervisor of an international airport. He was proficient in all kinds of mechanical equipment and worked overtime for three days to repair the runway lighting system. He suddenly died on the airport tarmac and time-traveled to Su Nian, an educated youth from the Liushu Bay Brigade of the Red Star Commune in 1970. He married Shen Qingchuan and gave birth to another child. The two twin sons, the eldest baby Shen Le'an and the youngest Shen Leping, feel itchy when looking at the machine and want to fix it. They feel distressed and duplicitous when looking at the sick Shen Qingshan. They rely on repairing machinery and developing home appliances to live a life of a doting husband and doting son.
