Lingshuang, who was sentenced to thousands of households in Dongchang, was a ruthless character who crawled out from the corpse pile of imperial prison. A soft sword was stained with countless blood, and his eyes could only tolerate "dead people" and "truth". Xiao Che, the commander of the Jinyi Guards, is wearing a crimson flying fish suit and an embroidered spring knife on his waist. He is the only strong man in the court who dares to challenge Dongchang.
A silver hairpin was involved in the unjust case of two families of officials who were exterminated more than 20 years ago. The handkerchief friendship between Ling Shuang's mother and Xiao Che's mother and the evidence of their father's crimes gradually surfaced. When Duke Wei of Dongchang led his officers and soldiers to surround the bandits' den, Xiao Che stuffed the account book into Ling Shuang's hands: "If you want to kill her, step over my body first!" But who could have expected that the black hand behind the unjust case was far more complicated than imagined. The person who used to protect her actually raised a sword to her chest?
From the mountain of corpses to the court, from mortal enemies to confidants, can Ling Shuang and Xiao Che uncover the mystery of Shen Yuan with a broken hairpin? Will the oath to "protect you for life" be fulfilled or turn into a bloody regret?