Štyridsať rokov starý Gerry a jeho rodičia returning to African savannah po siedmich mesiacoch v Londýne, keď ich plané crash lands v džungle, killing the pilot. When Gerry wakes, he has a terrifying šok. He is now a baboon. Using jeho ľudské intellect a powers of reason, he ensures jeho survival and growing acceptance by a baboon troop. Just when things are getting comfortable, a šock attack by a leopard triggers Gerry's re-entry do svojich vlastných bodov. V nemocnici, Doctor's tell him he has awoken from a coma - ale doger Gerry má škár na to otherwise?