In 1941 America, Kay and her husband are happy enough until he enlists after Pearl Harbor. Against his wishes, she takes a job at the local aircraft plant where she meets Hazel, the singer from across the way. The two soon become firm friends and with the other girls become increasingly expert workers. As the war drags on, Kay finally dates her trumpet-playing foreman and life gets more complicated.
A bad Polish actor is just trying to make a living when Poland is invaded by the Germans in World War II. His wife has the habit of entertaining young Polish officers while he's on stage, which is also a source of depression to him. When one of her officers comes back on a Secret Mission, the actor takes charge and comes up with a plan for them to escape.
Four socialites unexpectedly clash: heiress Brooke Carter runs into gambler Johnny Spanish at the race track while playboy Michael O. Pritchard nearly runs into stage star Kitty O'Kelly with his car. Backstage at Kitty's show, it turns out she and Brooke are old friends who attended public school together. The foursome do the town, accompanied by Brooke's companion Elizabeth, who throws herself at Michael's butler and chauffeur Rodney James.
Various interconnected people struggle to survive when an earthquake of unimaginable magnitude hits Los Angeles, California.