In the year 2029, an astronaut whose unauthorized mission to rescue a chimp companion from a mysterious space storm crash-lands on a planet where apes rule and humans are sold into slavery. With the help of a sympathetic chimpanzee activist named Ari and a small band of human rebels, Leo leads the effort to evade the advancing Gorilla Army led by General Thade and his most trusted warrior Attar. Now the race is on to reach a sacred temple within the planet's Forbidden Zone to discover the shocking secrets of mankind's past and the key to its future.