The Su family, a well-known medical family in the south of the Yangtze River, was framed and everyone in the family was convicted. The legitimate daughter Su Qingyuan sneaked into the capital incognito with her ancestral medical classics and her unique skills. In order to clear her family's grievances, she worked step by step and relied on her exquisite medical skills to save lives and heal the wounded. However, she accidentally got involved in the disputes in the palace and formed an indissoluble bond with the cold and taciturn Prince Xiao Jingyuan.
The palace walls are deep and the undercurrent is surging. She uses silver needles as blades and medical skills as shields to solve life-and-death crises one after another: she heals a concubine with dystocia, resolves a palace plague, exposes the plot of a poisonous woman, and establishes a firm foothold in the treacherous court and back house. Xiao Jingyuan was wary of this mysterious woman at first, but was gradually attracted by her intelligence, tenacity and benevolence as a doctor. From utilization to temptation, from suspicion to trust, the two joined hands to fight against powerful enemies.
Faced with the increasing pressure of her former enemies, the overt and covert struggles of the court forces, and the jealousy and frame-up of the concubines in the harem, Su Qingyuan never backed down. She not only wants to clear away the family's grievances, but also protects the people around her. And Jamel Xiao also shed his cold shell for her and became the most solid backing. The two gradually fell in love in the wind and rain, and made a lifelong promise amidst the light of swords.
This is a story about redemption and protection, as well as a legend of breaking through problems with medical skills and staying together with deep love. When the truth emerges and the dust settles, can they have a beautiful marriage together in this prosperous and dangerous capital?