A rich woman Tseung Tin Ngor (Maggie Siu)'s beloved dog Woody has got behaviour problems since Ngor is being kidnapped. After released, Ngor takes Woody for various medical treatments but none of them is helpful to cure its illness. Desperate Ngor finally finds Lai Tsun Sing (Kent Cheng), a retired police canine officer, who has just opened a kennel in the walled village. Ngor asks Sing to give Woody training but it creates discord between both of them. When Woody's condition is getting better and better, Ngor is pleased and shows deference toward Sing. Ngor feels obscured of the kidnapping and she misconceives that the landlord of the kennel, Chow Yung Kung (Steven Ma), is one of the kidnappers. Sing gets his trained dog Bingo carrying out an investigation. They finally prove that Kung is innocent. Kung appreciates Sing's efforts and he starts joining the course for learning how to be a dog lover. Lai Sin Yue (Linda Chung), Sing's veterinarian daughter, is aware of her feeling towards him since then.