In the 1950s a Puppy was caught, taken to the kennel and killed. The dog's spirit is reincarnated as a Golden Retriever puppy, he is found by two men who leave him closed in their truck in the sun and when he is about to die he is saved by Ethan, an eight-year-old boy, and by his mother, who breaks the truck window and saves it. They take him home and after convincing Ethan's father, the dog is allowed to stay and is renamed Bailey. Ethan and Bailey face many adventures together, until Bailey ages and dies. Bailey reincarnates in many other dogs and experiences many other adventures, until he meets his beloved friend Ethan again and ... finally they recognize each other.