From Esthétique:

During the period when the Tang Dynasty was at its peak of success, imperial court general, Huangfu Duanhua, was whisked away into a series of bizarre and supernatural events after his friend accidentally stepped into a store owned by a Persian merchant. This then led to many incidents that were kept sealed by the empire for a thousand years…

Court disputes, strife in the royal family… As the wheels of the perilous history are set in motion, where will they lead?