By 2021, the resource Wars of the world (Drugs, Oil, Water, Food ect), had killed millions, driving entire species into extinction and sending mankind off-planet to the orbital space of the Earth, the Moon, and the planet Mars. Those who remained coveted any living creature, and for people who couldn't afford one, companies built incredibly realistic simulacrae: horses, birds, cats, sheep, snakes. . . They even built humans.
Emigrees to Mars received androids so sophisticated it was impossible to tell them from true men or women. Fearful of the havoc these artificial humans could wreak, the government banned them from Earth. But when androids didn't want to be identified, they just blended in.
Rick Deckard was an officially sanctioned bounty hunter whose job was to find rogue androids, and to retire them. But cornered, androids tended to fight back, with deadly results.
"It would be hard to find a reader of science fiction who would disagree that Philip K. Dick's Do Androids Dream of Electric Sheep? is a classic in the genre. It has all the elements of a great work of science fiction. It works on many levels and addresses a range of humanity's most pressing concerns. It is heavy in drama but also asks profound philosophical questions. The character development in this novel is as good as any I've read in a PKD book and the story draws on many of Dick's common themes. The story and drama of Do Androids Dream of Electric Sheep? are perfect for Hollywood but also make intense observations about the nature of life, religion, technology and the human condition."
–Jason Koornick, philipKdickFans.com, 2000
"The last 50 pages of the book are deeply, deeply moving, even though I often could not explain to myself why I was so moved. When I finished the book, I had to sit down and just stare out into space for a while. And then I had to think. It's not often you come across a book like this. Read it now."
–Steven Wu, Steven Wu's Book Reviews, 2001