Shen Yao, the top killer in modern times, was silenced in the laboratory for exposing the organization's secrets of using living people to test drugs. When she opened her eyes again, she became Shen Qinghe, the daughter of a drug store owner in Chongqing during the Republic of China. Her father, Shen Jingzhi, was arrested for refusing to develop poisons for the Japanese army, leaving behind a mysterious "Record of Exotic Medicines" and a space medicine garden that can cultivate rare medicinal materials.
The coercion of the Japanese army, the covetousness of the traitors, and the undercurrent of the underground party dragged this frail body into the whirlpool of troubled times. With the keenness of a killer and the wisdom of "Exotic Medicine", Shen Yao cultivated "false death grass" and "ecstasy flower" in the space medicine garden, and used poison and medical skills to walk on the edge of the knife: she pretended to be crazy and prepared antidote for the anti-Japanese wounded; she cracked secret messages and used herbal patterns to convey military intelligence; she and Gu Yanchen, a Western medicine doctor who appeared to be serving the Japanese army, went from suspicion to alliance, but found that their fathers had already forged a life-and-death bond due to the anti-Japanese cause.
When the secrets of the space medicine garden, the truth of "The Record of Different Medicines" and Gu Yanchen's hidden identity were revealed layer by layer, Shen Yao finally understood: troubled times are like poisonous swamps, and the fragrance of medicine can save people. What she holds in her hand is not only a good way to save people, but also a sharp blade to pierce the darkness. The so-called salvation has always been hidden in the courage to gamble with fate.