The Cup of Life.

Sisters Helen and Ruth Fiske work in a department store and live in an East Side tenement. While Ruth is satisfied with her "regular fellow," a mechanic, Helen yearns for fine clothes, wealth, and attention. Ruth marries the mechanic and they struggle for a modest existence. Helen leaves her squalor to be the mistress of wealthy John Ward, despite Ruth's pleas. As the years pass, Helen goes from one man to the next, looking for more luxuries. When James Kellerman, who really loves her, proposes, she laughs at him.