Jim Vesser and his team of railroading men try to build a rail line through a mountain pass, while a group of less scrupulous construction workers sabotages the entire operation in the hopes that they can get their tracks laid first and get the money from the railroad.

Lawman Wyatt Earp and outlaw Doc Holliday form an unlikely alliance which culminates in their participation in the legendary Gunfight at the O.K. Corral.

Confederate super-spy Johnny and his partner in crime Steve travel to San Francisco near the end of the Civil War, masquerading, respectively, as a singer/guitar instructor and a magic-elixir vendor. Once there, Johnny dons a fake wig, beard and mustache, and steals Union gold to bring back to the South, aided by a guitar that doubles as a gun.