Lin Yi, a graduate of a traditional Chinese medicine program, struggles to find a job and faces rejection everywhere. By chance, he activates a Disease Entry System that allows him to see patients' affected areas, causes of illness, and corresponding treatments at a glance. Combining the traditional Chinese medical skills passed down through his family, he repeatedly saves critically ill patients at the hospital. He identifies the difficult-to-diagnose Yang Floating Syndrome and stabilizes critically ill patients using ancient acupuncture techniques. He also exposes medical disturbance scams and a nanny's poisoning conspiracy. Facing hostility from colleagues and ongoing disagreements between Chinese and Western medical approaches, Lin Yi remains true to his original calling as a doctor. He unveils the secret acupuncture technique known as Through-the-Heaven Cooling and overcomes difficult postoperative conditions, including high fever and intestinal paralysis, that Western medicine struggles to treat. Through his abilities, he earns the trust of patients and recognition from senior doctors, rising from a down-and-out intern to a key member of the department and carrying on the treasures of traditional Chinese medicine through an integrated Chinese and Western medical approach.