A modern engineer who traveled through the Ming Dynasty with his soul traveled to the Ming Dynasty and became a prisoner. On the night he was imprisoned, he carved a three-dimensional reconstruction plan of the Ming Dynasty's treasury on a brick wall, attracting the attention of King Yu Zhu Yuheng. Zhu Yuheng knew the value of this picture, so he took it to prison and entrusted it with important tasks. However, the black hand behind the depleted treasury was directed at Mr. Xu Ge, the chief minister of the cabinet, and Shen Du was caught between reform and royalism. While using Zhao Tieshou to build new firearms, he teamed up with the female prison chief Lu Qingwu to track down old cases, and the Dongchang spy Bai Zhi lurking around him made the situation more complicated and confusing. What Shen Du has to do is not only to get out of the imperial edict alive, but also to shake the foundation of the entire decadent empire.
