Hoppy is leading a scientific expedition and the Chinese who have a hidden settlement nearby are trying to stop them. Saulters and his outlaw gang are also in the area looking for a gold mine. When Saulters men attack, the gold mine is found. Hoppy agrees to file for the Chinese and heads after Saulters in the chase to the land office.
You can now watch Secret of the Wastelands online on the following streaming providers in the United States.
| Directing | Derwin Abrahams | Director |
| Writing | Gerald Geraghty | Screenplay |
| Writing | Harry Sinclair Drago | Story |
| Writing | Clarence E. Mulford | Characters |
| Production | Harry Sherman | Producer |
| Sound | John Leipold | Music |
| Crew | Russell Harlan | Cinematography |
| Editing | Fred R. Feitshans Jr. | Editor |
| Art | Ralph Berger | Art Direction |
| Art | Emile Kuri | Set Decoration |
