This third Planet of the apes film finds Cornelius, Zira and Dr. Milo, three apes from the future, escaping from their planet as it is being destroyed and landing on 20th century Earth, where they are taken to the Los Angeles Zoo for examination. When Zira reveals their ability to speak to a psychologist, the apes are treated as curiosities. However, when the U.S. government begins to believe their story that the Earth will eventually be inherited...

Looks at the production and filming of the motion picture The planet of the apes and its sequels, which explored religious, social, and political issues through the relationship between apes and humans and between slaves and masters in an imaginary future world. Also looks at the spin-off television programs and merchandise. Includes interviews with stars Charlton Heston and Kim Hunter.

In this second Planet of the apes film, an astronaut gets thrown through a portal and into the future. When he lands on the ape planet, he finds a subterranean world where highly advanced humans live in New York City's former subway system in fear of militaristic gorillas and worship a weapon capable of detroying the entire planet.