Mabel Montressor is the usual spoiled and pampered daughter of wealthy parents. After turning down her parents’ choice of a husband she shocks them by announcing she wants to be a school teacher. In John Strong, the principal of the school, Mabel meets her Waterloo. Upon her refusal to work along lines laid down by him, he discharges her. When she thinks it over she knows in her heart that John Strong did right. She becomes lonesome for her “bad boys” of the school, and one day she wanders in the neighborhood. Tommy Moriarty, her worst boy, has been suspended by the principal. Mabel meets him and goes home with him. At the Moriarty home she gets in a mix-up with Mrs. Moriarty, a doctor, the principal, “the stork” and Mr. Moriarty. John Strong escorts her home late that night and she learns that he has missed her ever since she left the school.