A retired auto manufacturer and his wife take a long-planned European vacation only to find that they want very different things from life.

An overweight lab technician with low self esteem, brought on by his dominant mother, becomes a serial killer of female nurses.

Georgia Garrett is sent by jealous wife Elvira Kent on an ocean cruise to masquerade as herself while she secretly stays home to catch her husband cheating. Meanwhile equally suspicious husband Michael Kent has sent a private eye on the same cruise to catch his wife cheating. Love and confusion ensues along with plenty of musical numbers.