After spending ten years deep in the mountains learning the language of animals, Lin Bei is urged by his mother to come down the mountain and work as an assistant at a veterinary clinic. With his ability to understand animals' thoughts through their language, he solves one puzzling case after another, including a Husky that swallowed a screw, a Ragdoll cat refusing to eat, a German Shepherd overwhelmed by grief, and a tiger longing for its mate. He gradually goes from clashing with the meticulous Dr. Fang to working alongside her. Later, he encounters all sorts of amusing cases involving leopard cats, racehorses, a fox demanding repayment of a debt, and a parrot that knows how to discipline people. He also takes part in rescuing a group of dogs living in terrible conditions at a breeding farm.