It's a bleak portray of survival during some undefined post-apocalyptic time. A study in "what it means to be human". A father and his son trying to make it day by day when all around them are murdering gangs and cannibalism. A Mad Max movie without a heroic Mel Gibson character.
Survival and humanity in and of itself is heroic, I suppose. Giving to others even when you have nothing.
Definitely thought-provoking and moving. Some find the triumph of humanity against all odds uplifting, but honestly I though the book was depressing. I just don't think humans will survive when everything is dead in the world. Still, I recommend it, just keep in mind the story's bleakness.
This one's on my Kindle, so just offering up a review!