Lin Ran, a modern programmer, travels through the late Eastern Han Dynasty and joins Cao Cao's army for the first time. He uses his wisdom to help him pacify the Yellow Turbans and secure Yanzhou. He outsmarts Liu Bei's rebellion and establishes his reputation as a counselor in troubled times. However, Cao Cao's ambition of "pretending to be a Han prime minister but actually being a Han traitor" gradually emerged. Lin Ran's belief was shaken and he decided to switch to Liu Bei. From Xuzhou to Jingzhou, Lin Ran and Zhuge Liang joined forces to burn Chibi and lay the foundation for Yizhou, rewriting the tragedies of Guan Yu and Zhang Fei, helping Liu Bei in his northern expedition to the Central Plains, and finally unifying the Three Kingdoms. In a chess game in troubled times, loyalty and ambition are intertwined. Lin Ran changes his fate and writes a new chapter with his strategy.