After a spectacular crash-landing on an uncharted planet, brash astronaut Leo Davidson finds himself trapped in a savage world where talking apes dominate the human race. Desperate to find a way home, Leo must evade the invincible gorilla army led by ruthless General Thade and his most trusted warrior, Attar. Now the pulse-pounding race is on to reach a sacred temple that may hold the shocking secrets of mankind's past - and the last hope for its salvation!