Rosalie Darlton, a young woman and fervent patriot during the American Revolution, inconveniently has a Tory father with whom she lives in Vermont. When she becomes romantically involved with their neighbor and fellow patriot, Clarence Winsdale, her father strongly disapproves. In order to separate the young people, Rosalie's father takes her on an extended visit to Boston. Meanwhile, the fighting between the colonists and the British breaks out in earnest, and Clarence takes up arms for the colonies. Clarence is stationed in the vicinity of Boston while Rosalie is there, and they meet behind her father's back.
However, Rosalie's father has taken advantage of their time in Boston to find a more prosperous and Tory suitor. His choice is young man named Trevorgy, who already has a reputation for his service as a British officer, and he is most assuredly not to Rosalie's taste.
When Trevorgy's duties take him to Washington, Rosalie and her father leave Boston and return to their home. Trevorgy learns from a captured colonial officer that Rosalie's affections belong to Clarence, and he fears for his chances of marrying her. After some time, Trevorgy visits the Darlton house and renews his advances, particularly pushing his suit through Rosalie's father.
Trevorgy dies in battle, and when it becomes clear that the Americans will win the war, Rosalie's father adjusts his political feelings accordingly. Clarence distinguishes himself in battle, and Rosalie's father finally consents to the match, though he never becomes a favorite with Clarence.