John Vincent, a man of wealth, is obsessed with love and ambition for Ben. his son. He neglects his daughter, Mary, and after the death of Mrs. Vincent the girl leads a lonely life until her marriage to Henry Love. Later, Vincent realizes his hopes for Ben when he makes him junior partner in the firm. On an inspection tour of the factory, however, young Vincent is stabbed and killed by a fanatical employee called Mad John. Mary takes her little boy and girl and rushes home to comfort her grief-crazed father. He has a stroke and loses his memory. It seems to him that Mary's son is little Ben. He lives over the past with his grandchild, whom Mary allows to comfort him to the end.