After the death of her mother, Little Sunshine, a child of the mountains, is left a penniless orphan. The Rev. Baker, who has been a friend of the girl and her mother, assumes a sort of friendly guardianship over her. Beppo, an Italian violinist, worships Little Sunshine. In the distant city Robert Harding, a clubman, leaves for the country on a fishing trip. One day while engaged in fishing a little hat comes floating down to him. He recovers it only to look up and see the owner, Little Sunshine herself, advancing toward him from up stream. The attraction is mutual. Sunshine recovers the hat and there is promise of further meetings. The call of love is strong and before long a simple country wedding is celebrated. Little Sunshine leaves with her husband for the big city. Society and its conventions present difficulties to the little mountain maid which she has not suspected. After many months she misconstrues her husband's actions at a ball in their home and believes he no longer cares for her. That night the inward struggle comes. Harding, returning from his club, finds Little Sunshine has disappeared. He fears the worst and is a little piqued at her actions of the previous weeks and her apparent inability to conform with the conventions of his accustomed existence. He throws himself into the whirl of dissipation in an effort to forget Little Sunshine returns to the Rev. Baker and Beppo. Months pass and the kind minister learns that his former charge is about to become a mother. Back in the city Harding, from time to time feels the sting of remorse for his actions toward Little Sunshine, and is disgusted with the life he is leading. He learns what be had least expected when he comes across a little baby garment upon which his wife was working just before she left. He rushes away to the mountains, arrives at the little cabin and finds preparations have been made to celebrate the Christmas season. He rushes past Beppo at the door, through the room with its Christmas tree and to the door of the bedroom wherein Little Sunshine lies a mother. A joyful reconciliation follows.