When Edith, living in the country, learns that her mother must go south for the winter as the only means of saving her life, she writes to her sister that she is coming to the city to look for work. As she leaves, her sweetheart gives her a revolver, with instructions to use it on city fellows who might try to get fresh. In the meantime, her sister Helen is struggling in the city as a stenographer. Her employer. Manning, makes overtures to her and she continues to fight him off. She is crestfallen when she receives Edith's letter, telling of her mother's ill health and of the money necessary to send her away. Manning reads this letter and tempts the girl with a check. She resists and later, in the course of her work, she writes a letter to the effect that a certain option that can be bought for $500 will save the company $80,000. Deceiving Manning with her smiles, she gets the check. Edith has arrived and is waiting in the adjoining room. Helen gives her the money, with instructions to buy the option. Manning overhears and tries to interfere, but Helen holds him at bay with her sister's gun while the latter goes on the errand. When Edith returns she finds Helen in a faint on the floor and Manning about to secure the document when Hull, who sold the option, enters and takes the girls under his protection. A few months finds the two girls with their mother comfortably settled. Helen receives word from Hull that the option has been sold for $10,000 and that Manning has been paid the $500 which had been borrowed.