Tonight or Never

Nella Vargo (Swanson) is a Hungarian prima donna whose latest performances include singing ''Tosca'' in Venice. Although she is praised by the audience, her music teacher Rudig feels that she can not be the greatest opera singer in history until she performs in New York City. When she is criticized for not putting her soul into the song, she gets mad, until she suddenly notices a mysterious man walking on the street. She becomes smitten with the man, until Rudig claims that he is a male prostitution whose latest client is Marchesa Bianca San Giovanni, a former diva with a notorious past.