The Men Who Fell (2007)

Two prisoners die floating in a space detention facility above a post-apocalyptic earth, hired by a mega corporation, Hunsinger, to retrieve an object on Earth. Because they are prisoners, little information is given about the mission. When they land on Earth, they work their way through the post-apocalyptic wasteland and its inhabitants to a gigantic underground industrial complex where the object is located, but the complex is more dangerous than the prisoners thought.