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"]
| Directing | Bernard McEveety | Director |
| Writing | Robert Hamner | Writer |
| Directing | Don McDougall | Director |
| Writing | Art Wallace | Writer |
| Writing | Pierre Boulle | Characters |
| Camera | Gerald Perry Finnerman | Director of Photography |
| Production | Stanley Hough | Producer |
| Production | Herbert Hirschman | Executive Producer |
| Sound | Earle Hagen | Original Music Composer |
| Sound | Lalo Schifrin | Original Music Composer |
| Editing | Clay Bartels | Editor |
| Editing | Axel Hubert Sr. | Editor |
| Art | Archie J. Bacon | Art Direction |
| Art | Stuart A. Reiss | Set Decoration |
| Costume & Make-Up | Daniel C. Striepeke | Makeup Artist |
| Costume & Make-Up | Fred C. Blau Jr. | Makeup Artist |
| Costume & Make-Up | Stan Winston | Special Effects Makeup Artist |
| Costume & Make-Up | John Chambers | Makeup Designer |
| Sound | Leonard A. Engel | Supervising Music Editor |