This cute film is Doris Day's film debut and in it she plays Georgia Garrett, a substitute traveller on an ocean cruise. Her friend Elvira Kent (Janis Paige) had scheduled the cruise but at the last minute cancels when she suspects that her husband is cheating on her and she decides to stay at home to check up on him. So she gets her friend Georgia to go on the cruise in her stead. Meanwhile the husband hires a detective to watch Elvira while on the cruise, because, he too, suspects cheating. Of course, the detective falls for the substitute Elvira (Doris Day), making a somewhat complicated scenario with many possibilities. This is a fun-filled spoof with lots of good tunes by Doris Day.
by Phillip Erlewine synopsis