In the smog-choked dystopian Los Angeles of 2019, blade runner Rick Deckard (Harrison Ford) is called out of retirement to snuff a quartet of "replicants" -- androids consigned to slave labor on remote planets. They've escaped to Earth seeking their creator and a way to extend their short life spans. Director Ridley Scott's reedited version comes with a different ending and the omission of Ford's narration, giving the film a different tone.