Liu Chen, an ordinary college student, accidentally traveled to the fairyland and found that there were not only heroes from the Three Kingdoms period such as Lu Bu, Guan Yu, Zhang Fei, Liu Bei, and Zhuge Liang, but also mythical figures such as Sun Wukong, Zhu Bajie, Monk Sha, and Tang Seng from Journey to the West, as well as Avalokitesvara, Tathagata Buddha, and other mythical figures. What surprised him even more was that the fairy world was not the harmonious paradise he imagined, but was full of instability, injustice and struggles between various forces. With modern knowledge and unique perspective, Liu Chen began to make friends with these legendary immortal figures and help resolve disputes that could not be resolved in the immortal world. However, his actions aroused vigilance and obstruction from the conservative forces in the fairy world. Facing the crisis of energy imbalance in the fairy world, Liu Chen must complete the seemingly impossible task within three months - balancing the forces of all parties and reshaping the order of the fairy world. This is not only related to the survival of the fairy world, but also determines whether he can find a way to return to modern times. In the process, he not only had to overcome his own shortcomings in ability, but also had to deal with the social disciplines of the fairy world and the hostility of all forces. At the same time, he had to make a choice between his feelings for his confidante in the fairy world and his longing for modern life. When misunderstood as the mastermind behind a conspiracy in the Immortal World, Liu Chen must prove his innocence and stop the impending Immortal War.