During World War I, Rin-Tin-Tin finds that he must rescue his master, a fighter pilot, from his wrecked aircraft. He also has to help him escape his rival, who has ordered him shot so he can have the girl they're competing for all to himself.
| Actor | Role |
|---|---|
 Dorothy GulliverMarie von Waldorf | Marie von Waldorf |
 Rin-Tin-TinRinty | Rinty |
 Tom GalleryRichard Harrison | Richard Harrison |
| HHans JobyEric von Hager (as John Peters) | Eric von Hager (as John Peters) |