Back to the Planet of the Apes(1980)

They're taking over.

Astronauts Pete Burke and Allan Virdon crash on Earth in the far future and are captured by the apes. The men befriend a chimp named Galen who helps them to escape. In the hopes of finding a way to get back to their own time, the astronauts search for a computer in an earthquake-threatened city, with which they will be able to access their flight records. [The first of five telefilms edited from episodes of the 1974 TV series; this film combines the episodes "Escape from Tomorrow" and "The Trap"]