Human astronauts Burke and Virdon, with their chimp companion Galen, are forced to become involved in the strange gladiatorial games of the district run by prefect Tolar. The trio escape the gorilla police and find an abandoned government research project with a computer containing a vast amount of recording information about the old human-ruled world. [The second of five telefilms edited from episodes of the 1974 TV series; this film combines the episodes "The Gladiators" and "The Legacy"]

When fugitive human astronaut Virdon is shot, his chimp companion Galen must charm an old flame into accepting that a book on human surgery is no hoax. Meanwhile, their friend Burke is captured by the ape authorities and is to be brainwashed by a brilliant ape scientist named Wanda. [The fourth of five telefilms edited from episodes of the 1974 TV series; this film combines the episodes "The Surgeon" and "The Interrogation"]

In the year 3080, an astronaut finds himself on a planet ruled by intelligent apes after traveling through time. He must battle oppression and find a way back to his own time.

The fugitives Burke, Virdon and Galen try to save the life of a human blacksmith and his son, whom gorilla leader Urko has threatened with death should his horse lose another race. The trio also attempt to expose a crooked gorilla by framing him in a plot to kill Urko. [The third of five telefilms edited from episodes of the 1974 TV series; this film combines the episodes "The Horse Race" and "The Tyrant"]

When the astronauts Burke and Virdon, with their chimp companion Galen, are captured in a fishing village that employs human slave labor, they must prove their worth as fishermen or be sacrificed to the 'gods of the sea,' or what the men call sharks. Escaping from the forced labor camp, the trio become involved in a plot to develop a glider to drop a fragmentation bomb on the gorilla council. [The fifth of five telefilms edited from episodes of the 1974 TV series; this film combines the episodes "Tomorrow's Tide" and "Up Above the World So High"]