Evil knows no limits. After a bizarre attack in the Rocky Mountains, Kyle and his friends flee with more questions than answers. Where did the man come from? And why was his skin gray? A call home reveals the answers are worse than any of them could have imagined. As more tragedy unfolds across the region, a covert operative sets off to contain the body count–and the secret. Meanwhile, Kyle attempts to return to a normal life despite the feeling of eyes watching him everywhere he goes. Following him.