Primarist of the profession, David Okoye is increasingly difficult to establish relationships with his fellow men, it is easier to get close to the monkeys. He is extremely attracted to George, a gorilla adorable with an out-of-the-way intelligence he has been handling since birth. However, following a catastrophic genetic experiment, George transforms into an uncontrollable monster. And it’s not alone because a lot of other animals turn into angry predators, destroying everything in their passage. Okoye decides to collaborate with a geneticist to create an antidote.