PREY.IN THE NEVADA DESERT, AN EXPERIMENT HAS GONE HORRIBLY WRONG. A CLOUD OF NANOPARTICLES - MICRO-ROBOTS - HAS ESCAPED FROM THE LABORATORY. THIS CLOUD IS SELF-SUSTAINING AND SELF-PRODUCING. IT IS INTELLIGENT AND LEARNS FROM EXPERIENCE. FOR ALL PRACTICAL PURPOSES, IT IS ALIVE. IT HAS BEEN PROGRAMMED AS A PREDATOR. IT IS EVOLVING SWIFTLY, BECOMING MORE DEADLY WITH EACH PASSING HOUR. EVERY ATTEMPT TO DESTROY IT HAS FAILED. AND WE ARE THE PREY.