On an alien world, routine reconnaissance goes horribly wrong when Billy-G039 is separated from his team and left alone with a superior, hostile force... Billy ran. He was a soldier - fearless, deadly, trained to operate under intense pressure and never crack. A Spartan to the core. He had faced entire armies alongside his team, never feeling a single ounce of fright. But that was then. And whatever that thing was back there, slinking through the night, it had changed all that. Quietly, the Spartan thumbed off his safety. The beast stalked closer. Billy raised the gun, setting his sights.