Leo Lawson is sent to the mountains as a Daoist disciple. He meets Aria Shaw, his Senior. Under Aria, he learns medical arts, and their relationship evolves. Leo's grandmother falls ill. Aria uses 'Nine Revolving Needles' to save his grandmother, becoming famous. They venture into the city to search for Aria's origins. They solve problems with Aria's acupuncture. Her background is revealed: Aria's parents are grand-disciples of a divine healer.