In this book the narrator is the consciousness of the dog. As the dog goes through multiple different experiences. In the first section of the book the dog is a stray and has to deal with the struggles of trying to survive, in the second part of the book he is born into a pound and escapes only to be found by a mother and given to her kid. This is the longest portion of the book where the dog experiences things such as getting trained and dealing with being a bad dog. In the third portion he lives as a police dog and saves multiple lives during an earthquake in mexico, he also saves a little girl from a child predator. In the fourth and final portion of the book he starts out in a pet store where he is bought by an abusive family, he then escapes and finds out that he is in the same neighborhood that he lived in in the second life. He ends up finding him and he is an old man. The book ends sadly when his owner has a heart attack and dies, that is when the book ends.