Mix is Grant Malvern, a rancher who befriends scientist Quentin Durant (Tom S. Guise) after rescuing him from a trio of Chinese crooks. The crooks want to find Durant's Arizona gold mine, and the map to the location is contained in a pair of rings. After the crooks track down Durant and kill him, one of the rings winds up with Durant's daughter, Helen (Adams), and the other falls into Malvern's hands.
| Actor | Role |
|---|---|
 Tom MixGrant Malvern | Grant Malvern |
 Claire AdamsHelen Durant | Helen Durant |
 Donald MacDonaldFabian | Fabian |
 Hector V. SarnoMartinez (as Hector Sarno) | Martinez (as Hector Sarno) |
 Edward Peil Sr.Sun Yat (as Edward Peil) | Sun Yat (as Edward Peil) |
 George Siegmann'Red' Pollock | 'Red' Pollock |
 Edward JobsonCommodore Simpson | Commodore Simpson |
 Ethel WalesMiss Higgins | Miss Higgins |
| TTony the HorseTony, Tom's Horse | Tony, Tom's Horse |
 Tom GuiseQuentin Durant (as Tom S. Guise) | Quentin Durant (as Tom S. Guise) |
| MMinna RedmanMrs. Malvern | Mrs. Malvern |