A mad doctor is determined to take revenge on the family he believes is responsible for his daughter's death.

Mary, a woman with good intentions, takes pity on Henry, an artist with no home. What begins as a simple offer to come inside from the cold for tea gradually turns into more. Before the unsuspecting woman knows it, Henry, his family, and his friends con their way into her home. Eventually, Mary creates a ruse to rid herself of the parasites, but they have a different plan.

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.