The beautiful artist Gu Xiaoyue took in Halin, an abandoned golden retriever. Under the care of Gu Xiaoyue and the veterinarian at the animal hospital, Dr. Li, Halin recovered and learned to do chores such as cooking, mopping, and fetching slippers. Halin also bravely snatched back a stolen handbag for their neighbor, which made it famous overnight. In an accident, Halin swallowed Kid the Thief's diamond. Kid tried all means to track down Halin to kill it. How could Gu Xiaoyue and Dr. Li save Halin?