In this movie serial, Professor Sturgess invents a miraculous engine which can draw unlimited power from the atoms of the air. When the professor is killed, his daughter and her fiance must fight to keep the secret of the power engine out of the hands of evil Weston Dore and his henchmen.
| Actor | Role |
|---|---|
 Ben F. WilsonJim Thorpe | Jim Thorpe |
 Neva GerberAileen Sturgess | Aileen Sturgess |
 Lafe McKeeProf. Daniel Sturgess | Prof. Daniel Sturgess |
 Al Ernest GarciaWeston Dore | Weston Dore |
 William H. TurnerJarvis Humphries | Jarvis Humphries |
 Ruth RoyceCarrie Dore | Carrie Dore |
| CCatherine KentMrs. Thorpe | Mrs. Thorpe |
 Nelson McDowellDr. Clack | Dr. Clack |
| CChief Eagle WingSabo - a Mysterious Hindu | Sabo - a Mysterious Hindu |
 Sam AllenJohn Morgan | John Morgan |
 Jess CavinBernard Christman | Bernard Christman |
| JJack HendersonJustice of the Peace | Justice of the Peace |