A puppy named Koro loves his young owner and tries to follow her to school. But once he manages to break out of the yard of his house, she is long gone. Koro loses his way, and when the family realizes their beloved dog is gone, they search for him. However, all attempts to find him prove futile. Koro interacts with various humans and animals of the town as he tries to make the journey home to the little girl that loves him.