In pursuit of stolen aircraft engines on Carlotta, a Central American island, federal agent Rigby meets chief suspect Hintten and his wife Elizabeth, a sultry cafe singer. He is watched by Bealer, a "pie-shaped man" with sore feet. Rigby knows he's on the right track when Bealer offers him money to leave Carlotta

A cruise ship captain (George Brent) is about to go out to sea once again. His VERY precocious daughter (Jane Powell) stows away and spends much of her time telling various ridiculous lies, trying to set up a woman with a future husband as well as trying to get a world famous opera singer (Lauritz Melchior) to listen to her sing.

Arthur and Vivian are just married, but when the get to their honeymoon suite in Washington D.C., they find it occupied. 

In 1936, a young man arrives in Hitler's Germany, frantically seeking information about his missing German mother, and finds she is pending execution at a concentration camp.

A mentally unstable man, who has been kept in isolation for years, escapes and causes trouble for his identical twin brother