Head railroad man Dan is as ugly as he is honorable. When he spots a drifter who'd hopped a freight held up by a landslide, Dan offers the man a job; then he finds the man was a railroader, too, and takes him under his wing. Engaged to Mary, Dan doesn't notice the growing attraction between his protégé and his intended but focuses instead on running the railroad.
Cameo Kirby, an honest riverboat gambler who works the Mississippi, rescues a girl from a gang of ruffians in New Orleans, but she disappears after he sings her a love song.
A go-getting bank messenger falls in with unsuccessful gambler.
Soldier of fortune Maxton is stranded in a Central American country. He and Tom, the nephew of the country's richest man, try to end Morloff's banditry but just barely escape a firing squad. They become rivals for Rosita.