Sharky, a rival road agent, plots to spoil a trial run to be made on Helen's road that will win a mail contract. He opens a waste valve on the tank of the engine, and, when nearing Lone Point, the water tank runs dry. Helen comes to the rescue by mounting the new gasoline speeder and starting off with the mail for the end of the run.
| Actor | Role |
|---|---|
 Helen HolmesHelen | Helen |
 Leo D. MaloneyBilly - a Lineman | Billy - a Lineman |
 George A. WilliamsSharky - Agent of the Rival Road | Sharky - Agent of the Rival Road |
| GGeorge SloanBrenton - Sharky's Accomplice | Brenton - Sharky's Accomplice |