Oh Boy! 1919 film

Carlotta has been brought up in an Italian convent, unaware that she is the illegitimate child of American architect J. Winthrop Drake. When her mother, an Italian opera singer, dies, Drake finally learns of Carlotta's existence and brings her back to New York with him without revealing the truth of their relationship.

Denise Fleury supports her invalid mother in the Montmartre slums by making artificial flowers in a factory. When she loses her job, Denise is convinced by her friend Suzanne to join her working in a cabaret.