University student Chen Bin returns to his hometown to observe the three-year mourning period for his grandfather. By chance, he unlocks his family's ancestral traditional Chinese medicine skills and gains a spiritual rabbit that excels at finding rare medicinal herbs. His friend Yu Feng'er has long been troubled by neighborhood gossip, and Chen Bin often steps in to protect her. While gathering herbs in the mountains, he meets siblings Sun Hao and Sun Xiaoyin. With his superb medical skills, he helps the villagers improve their health and resolve everyday troubles. Chen Bin discovers precious medicinal ingredients and carefully combines them with herbs to treat his patients. With a calm disposition and exceptional medical knowledge, he handles all kinds of village affairs and peacefully protects the friends and family around him.