A plucky West Highland Terrier named Harvey is determined to protect his yard from an intruding animal. Meanwhile, Harvey's owner Maggie struggles to fit in at school, his friend Austin works to prevent his grandfather from losing his job at a retirement home, and new retirement home resident Josephine Fradette clings to her fierce individuality in the face of conformity. Finally, all characters -- both human and dog -- find resolution by standing up to adversity.