This serial is set during the American Civil War and is based on the Jules Verne story. A Union Army captain is captured by the Confederates and imprisoned in Richmond, Virginia. He and four other men escape in a balloon, but a hurricane blows them off course and they land on an uncharted island. There they encounter a tribe known as the Volcano People, are menaced by a wild savage, and run into a female alien from outer space bent on world domination. ~ Brian Gusse, All Movie Guide