High school student Gu Huaiyue accidentally obtained a mysterious jade in an antique market, and was drawn into a time and space vortex to Chang'an of the Tang Dynasty. I met the poet Li Bai by chance, witnessed the crisis of the prosperous age before the Anshi Rebellion, and found that Yujue resonated with historical figures. She once again traveled to the Ming Dynasty treasure ship, and worked with Zheng He to fight against the maritime conspiracy of the mysterious organization "Nine Lights Alliance".
Shen Yanqiu, an agent of the Modern History Administration, appears and reveals that Yujue is the key artifact to maintain time and space. Crises in different time and space are intertwined, and Gu Huaiyue must protect the historical truth in the confrontation between the Administration and the Jiuyao Alliance.
