Professor Ren Xinzheng resigns to start a mentoring class for traditional Chinese medicine, hoping to train true successors. His students—Sun Toutou, his son Ren Tianzhen, lawyer-turned-student Yang Xiaohong, pediatrician Peng Shiyan, and aspiring doctor Zhao Liquan—struggle to get along, but must work through their differences to preserve the legacy of Chinese medicine.

• Wu Gang
• Zhao Lusi
• Luo Yizhou
• Zhang Meng
• Jiang Shan
• Zhou Chengao
• Zhu Junlin
• Li Baihui