Mary Manning lives in a cabin in the Wisconsin woods with her invalid mother, her uncle, and her stern grandfather, her own father Paul having disappeared eighteen years earlier. When Paul, who became a derelict, finally returns home, his father turns him away, but Mary retrieves the prodigal and leads him to his wife, who bids Mary take care of him and then dies of shock. Aware of the pain that Paul caused her mother and preoccupied with the handsome Tom Gale, Mary neglects her father, and he soon resumes his drinking. When Paul visits a notorious dance hall, however, Mary remembers her promise to her mother and goes after him, but both are arrested in a raid. In court, she tries to assume the blame for Paul's presence in the dive, but Judge Michael Burke refuses to believe her. In his chambers, the judge effects a reconciliation of the family, after which Tom asks for Mary's hand in marriage.