In the first year of Wu Zhou's divine power, a corpse suddenly appeared in Qiao County, causing trouble for the people. The people rumored that it was the wronged soul of Li Tang who had resurrected and was trying to overthrow Wu Zhou. At the same time, the evil dragon formed by the evil spirit of the corpse suddenly descended on the capital city, claiming that Wu Zetian's dragon spirit would be broken and she would not live long. Faced with these rare phenomena, the great detective Di Renjie was ordered to investigate. Faced with many obstacles and even ambushes, Di Renjie teamed up with Song Xiaobai, a small figure who looked like him. Through a battle of wits and courage that was indistinguishable from the real thing, he finally used the means of resurrecting the corpse to save the defeat, uprooted the treacherous people hidden in the court, and completely overturned the villain's conspiracy.