A mysterious plague, the Purple Death, ravages the earth. Dr. Zarkov, investigating in his spaceship, finds a ship from planet Mongo seeding the atmosphere with dust. Sure enough, Ming the Merciless is up to his old tricks. So it's back to Mongo for Flash, Dale, and Zarkov.
You can now watch Flash Gordon Conquers the Universe online on the following streaming providers in the United States.
| Directing | Ray Taylor | Director |
| Directing | Ford Beebe | Director |
| Writing | George H. Plympton | Screenplay |
| Writing | Basil Dickey | Screenplay |
| Writing | Barry Shipman | Screenplay |
| Art | Harold H. MacArthur | Art Direction |
| Camera | Jerome Ash | Director of Photography |
| Camera | William A. Sickner | Director of Photography |
| Editing | Alvin Todd | Editor |
| Editing | Louis Sackin | Editor |
| Editing | Joseph Gluck | Editor |
| Editing | Saul A. Goodkind | Supervising Editor |
| Production | Henry MacRae | Associate Producer |
| Writing | Alex Raymond | Characters |
