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Primatologist Davis Okoye shares an unshakable bond with George, the extraordinarily intelligent, silverback gorilla who has been in his care since birth. But a rogue genetic experiment gone awry mutates this gentle ape into a raging creature of enormous size. To lớn make matters worse, it’s soon discovered there are other similarly altered animals. As these newly created alpha predators tear across North America, destroying everything in their path, Okoye teams with a discredited genetic engineer lớn secure an antidote, fighting his way through an ever-changing battlefield, not only khổng lồ halt a global catastrophe but to lớn save the fearsome creature that was once his friend.