Young Irish lad Tommy O'Day lives in a poor section of New York's Lower East Side, and is blessed with a beautiful singing voice. After an argument with his father, who accuses him of stealing the family's life savings, Tommy leaves home and gets a job singing in a cabaret. He is successful and soon lands the lead in a Broadway revue. On opening night, just as he is about to go on stage, he receives word that his mother, who he has not seen since he left home, is dying and wants to see him.
When a wealthy young lady leaves the US to visit her aunt in France, her husband falls in love with a "flapper". When the wife returns home, she finds out about her husband's affair. In order to make him jealous, she leads him to believe she has fallen for a jazz musician. However, instead of making him jealous it drives him into depression and he takes refuge in booze and even more affairs.
A naive country girl is tricked into a sham marriage by a wealthy womanizer, then must rebuild her life despite the taint of having borne a child out of wedlock.