Qin Chen, a top student in the Department of Modern History, accidentally came into contact with a mysterious jade seal during an inspection of an ancient tomb. He traveled to the fictional dynasty "Dayin" and became a young eunuch who had just been purified and sent to the palace. When he woke up, he was shocked to find that his body was intact - it turned out that the purification eunuch was paid to cheat and was just performing a fake castration drama.
Relying on modern knowledge and historical wisdom, Qin Chen acted as a "fake eunuch" in the harem, rising step by step from the lowest eunuch. He dealt with the ambitious concubine, the innocent but scheming princess, the female general with military power, and the courtiers with their own evil intentions, and established his own intelligence network and power in the undercurrent of the palace.
