After being released from prison, con man Thurston Hall gathers his gang of cronies--along with innocent chump Guy Kibbee--to help him sell worthless stock in a New Mexico gold mine.

The Florida Keys in 1840, where the implacable hurricanes of the Caribbean scream, where the salvagers of Key West, like the intrepid and beautiful Loxi Claiborne and her crew, reap, aboard frail schooners, the harvest of the wild wind, facing the shark teeth of the reefs to rescue the sailors and the cargo from the shipwrecks caused by the scavengers of the sea.

One of the last bills signed by President Lincoln authorizes pushing the Union Pacific Railroad across the wilderness to California. But financial opportunist Asa Barrows hopes to profit from obstructing it. Chief troubleshooter Jeff Butler has his hands full fighting Barrows' agent, gambler Sid Campeau; Campeau's partner Dick Allen is Jeff's war buddy and rival suitor for engineer's daughter Molly Monahan. Who will survive the effort to push the railroad through at any cost?

Ranger Don Stuart fights a forest fire with timber boss friend Tana 'Butch' Mason, and finds evidence of arson. He suspects Twig Dawson but can't prove it. Butch loves Don but he, poor fool, won't notice her as a woman; instead he meets socialite Celia in town and elopes with her. The action plot (Don's pursuit of the fire starter) parallels Tana's comic efforts to scare tenderfoot Celia back to the city.

Victor Ballard, a happy-go-lucky albeit impoverished sidewalk photographer, shares a New York City studio apartment with Polish immigrant painter Stefan Janowski. The big city doles out joy and misery indiscriminately: In the apartment below Victor and Steve, Gus Nelson learns that his wife has given birth to quintuplets, while the lonely tenant in the apartment below Gus has given up on life and committed suicide.

A G-man woos a newswoman and corners bank robbers with a hostage in a factory.

A writer takes a job as a secretary because her scrupulous husband isn't bringing in the dough as an attorney. When her new employer is murdered, she can't seem to make up her mind as to whether she "dunnit" or not.

Afraid of marriage, Simone (Mary Ellis) breaks off her long term engagement with her fiancé Paul de Lille (Tullio Carminati). Paul heads to the top of The Eiffel Tower with thoughts of suicide. In another part of Paris and also afraid of marriage, Mignon (Ida Lupino) breaks it off from her young lover (James Blakely). Despairing, Mignon also climbs to the top of the The Eiffel Tower intending to leap to her death. There she meets Paul and the two compare stories. After discussion, Paul dissuades her from leaping and the two conspire to make their respective partners jealous by pretending to have an affair with each other.