Terry Polaski is a disabled marine trying to avoid a medical discharge. When his wife brings home a stray boarder collie, Duke, Terry quickly falls in love with the intuitive animal, and the two become fast friends. Ten years later, Duke and Terry are homeless when Duke suddenly falls desperately ill. Terry fears that Duke has suffered a stroke and leaves him on the doorstep of a vet clinic with a heartfelt note asking for the veterinarian to please help him. The vet is moved by Terry’s letter and her team nurses Duke back to health. As Duke begins to recover, they start a campaign to locate his owner, including flyers and newspaper articles. Terry’s daughter, Alice, sees the article, and realizes that her long lost father is still alive. She locates him and helps him retrieve Duke from the clinic. Alice, Duke, and Terry are reunited and happy to have a second chance to share each other’s lives.