Edna Harding acts as secretary to her father, a Wall Street broker. On a falling market, Harding sustains losses which cripple him financially, but the stock manipulation which crushes him brings a fortune to Thomas Gregg, a young broker. Edna finds it necessary to secure employment, and as she has developed a lodged hate for Gregg, whom she has never seen and with whom she has no intimate acquaintance, she conceives a bold idea when the young broker advertises for a stenographer. Edna obtains the position and planning a system of signals with a friendly broker whose window faces hers, she proceeds to give out bits of information which she gains in her new office. As time progresses, Edna is brought to a realization of the fact that Gregg is not such a bad fellow after all. She notices his charitableness and consideration for unfortunate ones. Much to her distress, Edna discovers that she is falling in love with her kind-hearted employer, but she does not abandon her determination to ruin the man who wrecked her father’s business. At an important meeting, Edna learns of impending transactions and betrays her employer. When the day of action arrives, Gregg’s rivals in full control of affairs completely baffle the young man, who is unable to cope with them. Just as Gregg is about to be crushed, he is visited by an old veteran to whom he has extended an act of kindness and who furnishes the necessary capital to thwart the operations of the rival organization. Gregg rushes to the floor, stems the tide and returns to his office victorious. Unknown to Edna he has made an investment in her name which enables her to share in the profits and when she humbly confesses her duplicity he proposes a life partnership and is accepted.