The two ladies in the Prime Minister's Mansion each have their own talents. The legitimate daughter Shen Qingyan is poisoned by cold poison, and she hides her power under the mask of gentleness, just to investigate old cases and protect the family; the concubine Shen Qinghuan possesses unique skills in treating poisons, is forthright and has great righteousness in her heart, and uses medicine bags to help people in need. In order to find the soul-resurrecting grass and save the people, Xiao Che, the prince of Beilin, entered Beijing with a marriage contract. However, he became entangled with his twin sisters in the whirlpool of power and intrigue - he had no love with Qingyan but had to share the country, and he had love with Qinghuan but could not violate destiny. Yun Shuran, a descendant of the medical family, endured and lay dormant, detoxifying Qingyan while investigating the family injustice. When the conspiracy is revealed and the engagement is difficult to break, the two sisters join hands to break the poisonous situation. Between the righteousness of the mountains and rivers and the long love between their children, they find a path of two-way protection and mutual fulfillment.
Purpose: The way of medicine is the way of humanity, and benevolence defeats power and conspiracy.