When high school student Zheng Shaopeng nods off during a history lesson, he awakens to find himself transported back in time to the Danzhu Dynasty, where he assumes the identity of the impoverished scholar, Yang Lin. Initially bewildered by the customs and challenges of ancient life, Yang Lin soon discovers that his modern knowledge holds the key to unlocking a brighter future for himself and his newfound community. Drawing upon his contemporary understanding, Yang Lin pioneers a series of innovative inventions that revolutionize daily life in the village, earning him admiration and respect from the local populace. As he embraces his role as a catalyst for change, Yang Lin begins to forge meaningful connections and find solace in his newfound sense of belonging. Amidst the backdrop of internal strife and external threats, Yang Lin's journey takes a perilous turn as he bears witness to the ravages of war and the plight of the common people. Armed with his wit and ingenuity, he rises through the ranks of the court, earning the trust of the ruling elite and championing reforms to root out corruption and fortify the kingdom against looming adversaries.