Across America, hundreds of ordinary peaceful people suddenly turn into paranoid maniacal killers. In their madness, they spare neither friends, nor relatives, nor even themselves. So Perry Dawsey - a good-natured giant, a former American football star - notices that something is wrong with him. First, a strange rash and itching all over the body, then, out of nowhere, triangular growths under the skin. And then Perry began to hear voices whispering terrible things to him... He is infected. But Dawsey is not going to give in to this “something.” And, perhaps, the fate of all humanity will depend on the outcome of the brutal war he wages with his own body. Because the parasites need something from him - something much more than simple murders...