After the Battle of Jingnan, the Ming Dynasty moved its capital to Beijing, and under the seemingly prosperous times there were undercurrents.
He Qingci, a member of the Jinyiwei Hundred Household, a capable young man who has been struggling in modern society for many years, accidentally traveled to this crisis-ridden era. He brings with him a mysterious "historical insight system" - not only can he see through the true character and fate of historical figures, but he can also obtain resources from modern space at critical moments.
However, the identity he travels through is not simple: a hundred households of Jinyiwei are being involved in a huge conspiracy involving royal secrets. His immediate superior, the commander of the Jinyi Guards, Zhao Huan, appeared to have a lot of trust in him, but in fact he had already gone dark and secretly colluded with the remaining Mongolian troops to plot to overthrow the Ming Dynasty. He Qingci discovered that Zhao Huan was not only cultivating power in the court, but also using the authority of the Jin Yiwei to cover up a shocking secret that could shake the country.
Faced with this corrupted boss, He Qingci chose to endure the humiliation and bear the burden. While pretending to be a loyal subordinate in front of Zhao Huan, he secretly collected evidence and gradually disintegrated Zhao Huan's power network. He used his systematic insight to accurately intervene in historical events, not only protecting Zhongliang, but also delivering a fatal blow to the enemy at the critical moment.
In the process, he got acquainted with Zhu Wanqing, the former princess of the dynasty who lived in seclusion in the city due to her family's decline. The two supported each other in times of crisis and gradually developed feelings beyond friendship. But He Qingci knew that in this whirlpool of power, he could not easily expose his true intentions.