After the Taoist priest Wang Yuanzhuan discovered the Dunhuang Scripture Cave in 1900, he secretly dispersed and hid the core cultural relics in the face of plunder by Western explorers and the indifference of the Qing court, and designed a protection system with the key to the stars. More than a hundred years later, his descendants Wang Jingming and researcher Xia Xiaoyu embarked on a journey to track down lost cultural relics through ancestral secrets. However, they accidentally triggered the ancient prophecy of "the gathering of seven treasures and the opening of the cave." They revealed the biggest secret of Dunhuang - a secret realm of the Tang Dynasty that relied on the energy of the stars.
