On the Nevada desert, a handful of scientists are battling to retrieve a swarm of rogue micro-robots that has escaped from the lab. The swarm is self-sustaining, self-reproducing and capable of learning from experience. It is, to all and intents and purposes, alive. And very, very deadly. It has been programmed as a predator, a ruthless predator that becomes more dangerous with every passing hour…And we are the PREY.