On the day Xie Heng, the new top scholar in the imperial examination, entered the court as an official, he wore an old green shirt that had been washed and turned white.
Xiao Che, the powerful Marquis of Zhenbei, stopped him in front of the palace gate: "Your Majesty Xie's clothes are plainer than the curtains on my residence."
While all the ministers were laughing, Xie Heng raised his eyes: "If the curtain of the Marquis' door has been soaked in the blood and tears of poor students for ten years, I should burn incense and bathe before looking at it again."
That night, there was a secret note in the secret room of the royal study - written by Xiao Che himself: "This man is sharp and should be my sword."
Concept: In the decadent feudal power field, how do two completely different souls test, compete and redeem each other through the dangerous relationship of "sword and scabbard", and finally find a glimmer of humanity and the possibility of change in the quagmire of machinations?