Jiang Yu, a veterinarian born with the ability to understand beast language, guards the hundred thousand mountains alone. She successively saves a dystocic white tiger Shan Jun, a severely injured panda A Tie, a wolf king, and a pangolin, winning the animals' trust with medical skill and kindness, and also sees through the owl Bai Yu coerced by poachers. Faced with a wealthy merchant's conspiracy to hire people to round up sika deer, she unites with the white tiger, bear clan, wolf clan, and deer herd to set up an ambush and fight back, assisting the law enforcement team in sweeping up the poaching gang and letting endangered creatures finally regain hope. After the catastrophe, the animals reunite, vowing to guard their mountain forest home together.