Lin Yu, a future time traveler, traveled through the prosperous Tang Dynasty to protect the ancient painting "Mountains and Rivers", but was involved in the thousand-year conspiracy of Xuanming Pavilion to compete for the "key to time and space". The mysterious historian Su Yao, the defector Chen Xuan, and the reclusive master Xuan Jizi joined in one after another. They were armed with tortoise shells, jade pendants and other rare objects. They deciphered the tortoise shell of heavenly secrets in the ancient tombs of Luoyang, bravely fought against the soul-eating ghosts in the ancient city of quicksand in the Western Regions, broke through the time maze in the Cangming Snow Mountain, and pursued the key fragments through life and death trials.
The Xuanming Pavilion forces headed by "Blood Veil" followed closely, setting up deadly traps such as soul-eating fog and ice wall traps. As the ancient prophecy "Those who collect the keys can reshape time and space" surface, the protagonists not only have to battle wits and courage with the villains, but also face the ultimate torture of the order of time and space and personal obsessions. When the boundaries between time and space are broken, and reality and illusion are intertwined, a battle for the secret key related to the survival of time and space begins...
