It is prior to the commencement of World War II, and Japan's fiendish Black Dragon Society is hatching an evil plot with the Nazis. They instruct a brilliant scientist, Dr. Melcher, to travel to Japan on a secret mission. There he operates on six Japanese conspirators, transforming them to resemble six American leaders. The actual leaders are murdered and replaced with their likeness.
You can now watch Black Dragons online on the following streaming providers in the United States.
| Directing | William Nigh | Director |
| Production | Jack Dietz | Production Manager |
| Production | Sam Katzman | Producer |
| Sound | Johnny Lange | Music |
| Camera | Arthur Reed | Director of Photography |
| Editing | Carl Pierson | Editor |
| Writing | Harvey Gates | Original Story |
| Writing | Harvey Gates | Screenplay |
| Writing | Robert Kehoe | Story |
| Production | Jack Dietz | Producer |
| Sound | Lew Porter | Music |
| Art | Dave Milton | Art Direction |
| Sound | Glen Glenn | Sound Engineer |
| Sound | Heinz Roemheld | Music |
| Directing | Arthur Hammond | Assistant Director |
| Directing | Gerald Schnitzer | Assistant Director |
