In Dajing's Linjiang Prefecture, in Zhao Village, seven-year-old Zhao Xiaoxin was once a research institute doctoral graduate who died suddenly from overwork. Born into poverty and oppressed by his eldest uncle, he earns money by roasting sunflower seeds and writing popular stories while studying tirelessly. He passes all three levels of the imperial examinations with top honors and becomes the top scholar. Once he enters the imperial court, he improves salt production, invents the steam engine, opens up maritime trade and expands the empire's borders, and puts down foreign threats. He eventually earns a noble title and rises to the highest ranks of government. Despite his fame and achievements, he never forgets his father's words: he hopes they can build the ladder to heaven together.