Playboy Andy Mason, on leave from the army, romances showgirl Edie Allen overnight to such effect that she's starry-eyed when he leaves next morning for active duty in the Pacific. Only trouble is, he gave her the assumed name of Casey. Andy's eventual return with a medal is celebrated by his rich father with a benefit show featuring Eadie's show troupe, at which she's sure to learn his true identity...and meet Vivian, his 'family-arrangement' fiancée. Mostly song and dance.

When a psychiatric doctor researches a young girls' diary to find out why she murdered her entire family, he begins to fall into the same state of insomnia and confusion that led her to lose her mind.