Chen Mo, a student of the Department of Modern History, accidentally traveled to Sima Mansion in Hanoi during the late Jian'an period, just when Sima Yi was dormant and waiting for power. He has no fantasy powers and only relies on his solid knowledge of the history of the Three Kingdoms in the late Han Dynasty. He carefully conceals his identity as a time traveler and stays under Sima Yi's account as a counselor from a poor family.
He was well aware of Sima Yi's forbearance and ambition, and he also understood the power entanglements within Cao Wei and the strengths and weaknesses of Wu and Shu. From secretly warning against the key points of Zhuge Liang's Northern Expedition, to planning the official administration and farming strategies to build up strength for Sima Yi, to helping him sort out the situation and stabilize his confidants before the Gaoping Ling Incident, Chen Mo always acted as an "insider" and carefully assisted in the gaps of history.
He must not only avoid historical deviations caused by his own intervention, but also help the Sima family to resolve the suspicions of the Cao Wei clan, resist the Wu-Shu coalition, and quell internal rebellions. He must step by step promote the Sima camp from the controller of power in Cao Wei to the leader who finally unifies the nine states and ends the troubled times, and witnesses the prototype of a new dynasty gradually taking shape in the war of troubled times.
