Luke Beamish is the engineer of the Isobel, an old iron steed, and Cannonball Casey handles the throttle of the Mogul, a modern locomotive. Cannonball falls in love with Doris, Luke's daughter, who is greatly admired by Jack Sweeney, the railroad president's son. Doris rejects Casey's affections, considering him a bully, and consequently Casey challenges Jack to a wrestling match at the picnic.
| Actor | Role |
|---|---|
 Chester ConklinLuke Beamish | Luke Beamish |
 George BancroftCannonball Casey | Cannonball Casey |
 Jack LudenJack Sweeney | Jack Sweeney |
 Doris HillDoris Beamish | Doris Beamish |
| FFrank BondSupt. Dugan | Supt. Dugan |
 William H. TookerOld Man Sweeney | Old Man Sweeney |