A young woman works in Paris at the Gare du Nord. She spends every day talking into a microphone, announcing platform numbers and timetables, essentially invisible to the world. She falls in love with a man who, in turn, is in love with another. Our heroine considers her rival to be physically stunning, as beautiful 'as an angel'. She decides not to pursue the man. Rather, she is prepared to wait, alone - that is, until one night a male friend of the 'angel' asks her what she does for a living and she answers, 'Prostitute'.