Ellen Shannon, the daughter of self-made Irish politician Pat Shannon, is engaged to Ted Breslin, but because Pat began his career as a menial laborer, Ted's mother, Mrs.
During World War I, Jane Whiting, a bright young lawyer who is engaged to Senator Wheeler, is assigned by the district attorney to expose a gang of spies who are collecting money for the German government through the operation of a fraudulent charity organization.
Engrossed in the perfection of a new high power explosive, the husband seems to neglect his wife. She is further piqued by the introduction into their home of a man whose presence is unexplained, but who is really a Secret Service operative guarding the invention.
A wealthy old man is murdered after deciding to write his nephew out of his will. Fearing that he will be accused of the murder his nephew takes flight but, with the help of a young woman whose life he saves, he has to try and track down the real murderer.