After breaking a mirror in his home, superstitious Max tries to avoid situations which could bring bad luck, but in doing so causes himself the worst luck imaginable.

Sally McGill, a little Irish girl, brought up in a particularly sordid section, is compelled to work to support her entire family. Ben Blaney, the young foreman where she works, loves little Sally. Mrs. Rockwell, wealthy and childless, finds joy in taking a limited number of the poorest children to her country home each summer, and she selects those whom she will take. Sally's ambition is to become a refined lady like those about her, and she is attracted to Paul Taylor, but knows she is inferior to him.

A scientist tries to transfer the personality of a man into his mentally retarded son.