Song-and-dance man Bert Kalmar can't continue his stage career after an injury, so he has to earn his money as a lyricist. By chance, he meets composer Harry Ruby and their first song is a hit. Ruby gets Kalmar to marry his former partner Jessie Brown, and Kalmar and Jessie prevent Ruby from getting married to the wrong girls. But due to the fact that Ruby has caused a backer's withdrawal for a Kalmar play, they end their professional relationship.

A British officer stationed in Ireland falls for the wife of an intelligence man.

A struggling young singer falls for a nightclub owner whose father, a millionaire, is trying to shut it down.