Modern-day detective Li Qingyun dies in the line of duty and is reborn as the lowest-ranking embroidered-uniform guard in the Jiajing era of the Ming Dynasty.
With the Casebook in his left hand, he uncovers evidence; with a flintlock in his right, he wipes out corrupt officials. From the Northern Garrison Command to battlefields overseas, he eliminates Yan Song's faction, slays Japanese pirates, and crushes the Jurchen, using modern technology to shake the Ming empire to its core.
At court, he is the sharpest blade in Emperor Jiajing's hand; far from the capital, he is the Marquis of Zhenhai, worshipped by the people.
As firearms tear through the gentry's hypocrisy and ironclad ships crush Europe's arrogance, Li Qingyun becomes a taboo the history books dare not record:
"How about sharing half this dragon throne with me?" the emperor whispers, his words poisonous.
He strokes his saber and laughs coldly. "What I want is for every land beneath the sun and moon to be Han territory!"