Astronaut Brent is sent to rescue Taylor but crash lands on the Planet of the Apes, just like Taylor did in the original film. Taylor has disappeared into the Forbidden Zone so Brent and Nova try to follow and find him. He discovers a cult of humans that fear the Apes’ latest military movements and finds himself in the middle. Tension mounts to a climactic battle between ape and man deep in the bowels of the planet.

An U.S. Spaceship lands on a desolate planet, stranding astronaut Taylor in a world dominated by apes, 2000 years into the future, who use a primitive race of humans for experimentation and sport. Soon Taylor finds himself among the hunted, his life in the hands of a benevolent chimpanzee scientist.