Music-hall star Madeleine Marlowe leaves London engaged to the Duke of Trippingham only to find back home that Police Gazette hack Samuel A. McGee has exposed her as former burlesque queen Rosie O'Grady. To get her own back she announces that Sam is in fact her real suitor. He in turn has a song about Rosie published and something of an Irish brawl develops via his paper and her stage show.