| Director | Spencer Gordon Bennet |
|---|---|
| Genre | action film, adventure film |
| Country | United States |
Adventure-seeker Johnny Weissmuller receives a request from Professor Carl Blakely to collaboratively rescue a certain Professor Dixon from the Mountain of Explosive Fire in Kirundi. Blakely's daughter Nora comes along. The Kirundi natives belong to a religious tribe worshipping a demon thought to control fire. Pious in nature, they are willing to sacrifice humans just to appease the fire demon, who in fact is Dixon. They are also known to possess mystical items, including a jewel-encrusted sabre.
Notorious looters Leopold and Nels Comstock, along with their criminal crew, are looking to steal the Kirundi folks' treasures. They arrive at the strange land the same time Johnny and Blakely do. Jim is tipped off by a contact that his lover Sarabna is next in line to be sacrificed by the natives. The brave explorer arrives in the nick of time, managing to halt the procession and at the same time finding Dixon. Meanwhile, the looters strike gold but are discovered and killed by the Caucasian-loathing tribesmen.
The Mountain of Explosive Fire, revealed to be an active volcano, erupts suddenly. Johnny evacuates the local people and flees to safety with Blakely, Sarabna, and the fire demon Dixon. In gratitude, the chief presents the team with their precious treasures. Dixon considers donating them to a museum.