Medical student Lin Shuang accidentally traveled to an ancient dynasty where spiritual energy was revived, and became a young lady from a declining family. When she discovers that there is a strange phenomenon in this world where the dead resurrect when the moon sets and the crow crows, she meets Shen Tianshu, a young prisoner from the Qintian Prison who is investigating supernatural events. The two work together to uncover the centuries-old secrets of "Shuangtian Pavilion", but they are involved in the prince's conspiracy to compete for the "Aura Dragon Veins". When modern medicine meets ancient Taoism, how can the gentle time traveler and the upright prisoner prevent the coming catastrophe of heaven and earth?