Shen Qingci, the daughter of the guilty minister, became a mute slave after her family was destroyed, but she hid the secret of the poison left by her father and the clues to the injustice. In order to clear up the Shen family's grievances of collaborating with the enemy, she endured the humiliation and sneaked into the Seventh Prince's Mansion. It happened that the Seventh Prince Xiao Jinyuan was infected with the heart-corrupting poison and his life was in danger.
Using her rudimentary medical skills as bait, she dealt with the jealous prince, the vicious concubine and the hidden power of the queen mother: she visited the study at night to find poison records, used her body to resist the poison in exchange for the prince's trust, and received half a tiger talisman from the old men of the ruined temple, but was fatally hunted by the Liu family's assassins. From Xiao Jinyuan's initial use, to shouting "Qing Ci" for her gaffe, and then to saying "Her life, I will protect her", the two gradually became fettered in the whirlpool of power and intrigue.
When half a tiger talisman meets the life-protecting talisman of the country, and when the "forbidden" file in the imperial hospital hides the Queen Mother's conspiracy, Shen Qingci finally understands that his father's death and the prince's poison are all pawns in the royal family's power struggle. She takes the body of a mute girl, uses her medical skills as her blade, and her resourcefulness as her armor. Amidst the sword fights in the house and the court, she not only wants to protect her father, but also protects the Seventh Prince who once regarded her as a pawn, but now is willing to fight for her.
