In the 1970s, in Liuxi Village, young Liu Niu lost both his parents at an early age and struggled to make ends meet with his frail, frequently ill grandmother. By chance, he gained the ability to understand the thoughts of the old yellow ox, Lao Huang, who lived in his household. To earn money for his grandmother's medicine, Liu Niu followed Lao Huang's guidance into the mountains to gather precious medicinal herbs such as dendrobium and wild ginseng. However, his valuable harvest aroused the jealousy of a villager named Wang Ercai. Wang Ercai repeatedly spread rumors, forged evidence, and framed Liu Niu and the old ox. Despite countless misunderstandings and hardships, Liu Niu remained true to himself and repaid hostility with kindness. With the help of Seventh Uncle Gong and Xiulian, he exposed the schemes. Devoting himself to the study of medicinal herbs and healing, he eventually joined the commune's barefoot doctors' clinic, using his own hands to protect and care for the villagers.