Lin Yue, a university history student, accidentally transmigrates into Diao Chan from Romance of the Three Kingdoms while reading in the library. On the eve of Wang Yun's beauty scheme, Diao Chan (Lin Yue) uses her foreknowledge of history and modern-day intelligence to outmaneuver Dong Zhuo, successfully buying enough time for Lü Bu to arrive. After Dong Zhuo's death, Diao Chan and Lü Bu flee Chang'an together, embarking on an adventure through the Three Kingdoms era and across time.