A chemist named Aratus invents a concoction that will turn creatures to stone, but only realizes the dangers of his creation when his wife falls victim to it.

The baby daughter of Mrs. Norton, a widowed seamstress, dies. The sorrow-stricken mother gazes at the empty cradle and decides to replace the departed soul with an orphan child upon whom she can lavish the love, the rightful object of which the Great Giver and Taker has taken from her. She goes to the orphanage and asks to be given a baby girl, and is given one of the twin baby sisters. Richard Golden, a wealthy shirtwaist manufacturer, has an only son, a little boy, who yearns for a sister and continually begs his father to bring him a little sister to be a playmate to him, and the father, to satisfy the child's persistent pleading, goes to the orphan home and brings home the other little twin sister. Years roll by and both girls have grown to young womanhood in their different stations in life. Jack Golden, now grown to manhood, and knowing that the girl is only a foster sister, asks her to become his wife.

Pretty Ann, and Joe, the hostler, one day chance to meet. Strong is Joe, and simple, and Ann is shy and sweet. As man and maid have done before, they love, and marry, too. And live happy ever after? Ah, this tale is new to you! Yes, the tale is drear, prosaic; and so poetry won't do. A baby boy comes to bless the union. Joe is working in the stables when they tell him of his joy: his heart is gay and happy, and he tells the horses so. Then, it might be the angels were jealous of such mortal happiness; it might be the devil, seeing the stage so set, entered to play the leading role.

Characters in the film attend a movie titled 'Life’s Mirror', where they see parallel, cautionary versions of their own lives. Only the first two of the original seven reels survive.