Lin Feng, a college student majoring in modern history, was studying the ancient books of the Three Kingdoms in the library and was transported back in time to the tumultuous era of the late Eastern Han Dynasty. By chance, he became sworn friends with Liu Bei, Guan Yu, and Zhang Fei in Taoyuan and became his fourth brother.
Lin Feng relied on his thorough knowledge of history and modern wisdom to make suggestions for Liu Bei. His accurate predictions in the battle with the Yellow Turban Army helped the rebels become famous; while traveling around various places, he cleverly dealt with many difficulties, and also contributed to the friendship between Liu Bei and Zhao Yun. In the Battle of Guandu, he carefully planned the battle and laid the groundwork for subsequent development; he strongly recommended Zhuge Liang to come out, and the two worked together to formulate strategies. In the battle of Chibi, he used meteorological knowledge to help Sun and Liu's coalition forces defeat Cao's army; he conquered Yizhou and used intelligence to resolve numerous crises. After Hanzhong became the leader, it suffered a tragic loss in Jingzhou and suffered a disastrous defeat in Yiling.
After the White Emperor left him alone, Lin Feng and Zhuge Liang jointly shouldered the important task of reviving the Han Dynasty. In the face of internal and external troubles, they worked hard to maintain the stability and development of the Shu Han Dynasty. They made many northern expeditions to the Central Plains. In the midst of power struggles and fierce wars, they continued to write legends of ups and downs. In this magnificent and turbulent era of the Three Kingdoms, can Lin Feng rewrite history and realize his ambition of reviving the Han Dynasty?