After his colleague and a mentor, Prof. Achenbach dies in a set-up accident, while trying to produce gold from the lead, Werner Holk seeks revenge. Meanwhile, a British millionaire suggests that Holk work on him on a similar project.
Richard Girard is part of a New Orleans family working closely with the English Warburtons. When Richard meets Mary Warburton she is engaged to Erik von Gerardt. He does wed Mary but their time in America is financially difficult.
Joe Thunderhorse, a Sioux Indian who has become the wealthy star of a Wild West show, returns home to his reservation after years away and finds that his father is dying and his people are being abused by corrupt white officials.