Lu Xiao, a rebellious young man from a rich family, was sent to a mountain by his mother to become his teacher to a wealthy Taoist priest. He unexpectedly met the cold girl Su Yue and recognized her as his senior sister. Under Su Yue's discipline, he gradually understood medical skills, and the relationship between the two changed from tit-for-tat to close. After Lu Xiao came down from the mountain, his grandmother was critically ill. Su Yue violated the teacher's orders and used the "Nine Spinner Needles" to rescue her grandmother, and became famous in one battle. After that, the two traveled around the city in search of Su Yue's life experience, met people from all walks of life in the medical field, and repeatedly solved problems with Su Yue's acupuncture techniques. Lu Xiao also formed a medical support group. Finally, it was revealed that Su Yue's biological parents were the disciples of a mysterious doctor.
