What Is The summary of the last dog by Catherine Patterson the beginning and the ending?

In "The Last Dog" by Katherine Paterson, the story begins in a post-apocalyptic world where a boy named Brody, the last human Survivor, lives in a protected dome. He discovers a dog named Holo, who has been genetically engineered to interact with humans. As they form a bond, Brody grApples with the meaning of companionship and hope in a desolate world. In the end, Brody and Holo escape the confines of the dome, symbolizing the possibility of new beginnings and a future beyond the devastation.