Mary Linden is the secretary who is the unheralded power behind successful executive James Duneen. He takes her for granted until rival Wales tries to take her away from him.

When the elderly boss is forced to retire for health reasons, Mary Linden helps a man to the top and becomes the key to his success. She sacrifices for him and falls in love with him in the process, only to see her protege spun her for frivolous and jealous rivals, until his new fiancee feels threatened by her and steps in to keep them apart. Can he survive without her?