Calamity Jane is a tough and rowdy woman in the old West who owns a saloon and gambling joint (and runs a cattle rustling operation as a sideline). One day she hires a pretty but naive young woman to work as a saloon girl, and finds that the girl is bringing out the maternal instincts she never knew she had. Those instincts are put to the test when a US army cavalry troop arrives to clean up the town and the girl and the young lieutenant in charge of the troop fall in love, and Calamity Jane may know something about the lieutenant that the girl doesn't.

Cooper is a Union Army officer who after being jilted by girlfriend, Virginia Bruce, volunteers on what could be a suicide mission. He volunteers to go behind enemy lines disguised in Confederate gray as a staff officer to Robert E. Lee. He's to ride to a certain plantation which is a local brigade headquarters and deliberately let himself be caught with maps showing false Union troop positions. Of course, the penalty, then as now, is execution.

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.

The Whinneys share expenses for their trip to Hollywood with George and Gracie and their great Dane. A clerk in Whinney's bank has put fifty thousand dollars in a suitcase, hoping to rob Whinney on the road, but instead Whinney takes another road and is himself arrested in Nevada.

Johnny McCloud, a tough police inspector given more to fisticuffs than investigating has the hots for torch-singer Lola Parker, but Miss Parker is much taken with a good-looking crook named George Perry. This does not bother McCloud, as he not only gets his man behind bars but takes the man's woman also.

Two thieves discover a professional and personal relationship when individual heist plans are thrown together by circumstance.