The Road, by Cormac McCarthy

Audio book

One of the nicest, most patient, and kind men ever born and his son walk the Earth during the days after some kind of horrible apocalypse, the details of which we do not know. There has been fire everywhere, though, and ash continues to rain from the sky, seemingly years and years later. Except for a very few people, life on the planet is gone. Animals and plants are not present. The grass and trees are dead. The ocean is gray and lifeless. Bones lay on the beach.