Two sailors, Joe and Clarence have four days shore leave in spend their shore leave trying to get a girl for Clarence. Clarence has his eye on a girl with musical aspirations, and before Joe can stop him, promises to get her an audition with José Iturbi. But the trouble really starts when Joe realizes he's falling for his buddy's girl.

Stephanie and Terry are identical twins who have been raised separately since their parents divorced seven years earlier. Each envies the lifestyle of the other; and they decide, without telling Jeff or Mary, to switch families for a day or two. They soon find that it is harder to do what the other person is expected to do, and that looking alike is not enough. When they find that their charade may bring their parents back together, they agree to continue it. A major complication begins when Alice, Jeff's girlfriend and co-worker, finds out the real story.

In the wake of Pearl Harbor, a young lieutenant leaves his expectant wife to volunteer for a secret bombing mission which will take the war to the Japanese homeland.