Trainer Kang and his students visit Jeju Island to help the owners of Golden Retrievers and Jindo. The Golden Retrievers and the Jindo bark at each other and fight every time they meet. The owner of the Golden Retrievers thinks Jindo is the cause of the problem, whereas the owner of the Jindo thinks otherwise. The aggression they have against each other is reaching its climax, so Trainer Kang sets out to help them. (Source: Viu)