After her mother died of illness, takeaway worker Lin Wan unexpectedly awakened the ability to turn all things into lost medicinal materials. When the medical giants monopolized health and regarded the lives of the poor as nothing, she started from urban villages and used "unscientific" ancient prescriptions to cure terminal illnesses, soothe pain, and weave a warm network of grassroots mutual aid. It wasn't until the cold capital stretched out its tentacles that she realized that what she wanted to revive was not only medical skills, but also the lost conscience of an era. This is a war about the pricing power of life, and her only weapon is the fragrance of grass and trees in the palm of her hand.