Dunes amongst buildings

An alien race comes down from The Heavens. In 2 days they've taken over. Ugly faces or yellow stems we call them. They bring some of us to specific areas in the fields and practice human hunting. We criss-cross run to the woods skipping blue-ray power shots. They fly small devices after us. Some others are taken to huge metal bases planted on our lands and processed as human bovine. Houses are empty, there're dunes amongst buildings. Piles of dead bodies burn.