Chen Yan, a graduate student in the Department of Modern History, accidentally traveled through time. It coincided with Zhuge Liang's death in Wuzhangyuan, and the Shu Han Dynasty was plunged into internal and external troubles. He joined Liu Chan's army without the blessing of a golden finger. He only relied on his solid historical understanding and pragmatic governance ideas. Starting from grassroots official governance, he purified the court, suppressed the eunuchs' autocratic power, and injected vitality into the exhausted Shu Han.
Faced with the difficulties of the Northern Expedition, he abandoned empty talk and advocated recuperation, deep plowing in Bashu, improving agricultural tools and building water conservancy, so that the granary would become more abundant; rectifying armaments and reforming tactics, forging elite infantry and improved crossbows, and strengthening border defenses. He urged Liu Chan to abandon cowardice, regain the legacy of the late emperor, and unite people's hearts by "restoring the Central Plains and saving the people." At the same time, he used diplomatic means to connect Soochow and disintegrate the Cao Wei alliance.
From games in the court to battles on the battlefield, from improving people's livelihood to uniting the morale of the military, Chen Yan worked step by step to help Liu Chan shed his label as a faint king and lead Shu Han out of desperation. In the war of troubled times, they experienced suspicion and betrayal, victory and setbacks. Finally, with Bashu as the foundation, they launched the Northern Expedition and competed in the Central Plains. They continued the unfinished legend of the unification of the Han Dynasty and let the Han flag fly again in the land of Kyushu.