The picture opens in Pennsylvania 25 years ago, during the winter of terrible drought. Vogel, the village's most prosperous farmer, is called to his only brother's bedside to take charge of his 4-year-old nephew George. On his way home from the suicide's house, Vogel finds an old gypsy woman carrying an infant almost frozen to death. Vogel takes the infant home with him and the next day adopts her with George. The old gypsy is paid a sum of money to give up all claim of the child on condition that she will not interfere in the future. She accepts and departs. Marika and George are known in the town as the calamity children. Three years later, a daughter, Gertrude, is born to Vogel. The family is returning from her christening when the old gypsy woman suddenly seizes Marika and caresses her. The crowd drives off the old woman, the the incident makes an impression on Marika's young mind. Marika and George become childhood sweethearts, and when George is 12, he and Marika plant a little tree in the garden behind the house and call it their sweetheart tree. Seeing this, Vogel chides George for being so sentimentally silly, and orders him to get to work filling the grain bins. George resents Vogel's manner, and Vogel angrily flings out that George's father was a suicide who left Vogelto pay all his debts and bring up his son. George runs away, vowing that he will not return to the village until he can repay Vogel in full. Years pass and Marika and Gertrude are grown to young womanhood. Marika, with the memory of George ever in her heart, learns that he has prospered and is about to return to the village. Vogel, who hears this news, decides that George is the man to marry his daughter Gertrude. George returns, and is hailed with delight by all except Marika, who, actuated by a motive of gratitude because of all Vogel has done for her in the past, stifles the call of her own heart and keeps her love for George locked within her own breast. Later George asks Marika why she avoids him, but she's evasive, and he, in a fit of pique, proposes to Gertrude. When she hears of this, Marika insists upon fitting up the new home which George and his future bride are to occupy in a neighboring village. This necessitates her making frequent trips at night, returning to her home the following day. On one of these trips Marika again meets the old gypsy woman, who seizes her and calls her her daughter. Marika rushes to her home and later, as she hears the family discussing the incident of meeting the gypsy years ago, she realizes for the first time that the old hag is her own mother. It is St. John's Eve, two days before the wedding of George and Gertrude, and Marika is to make her last trip to the couple's new home. The family have retired and George has remained up to keep Marika company until train time. As she realizes that George is soon to go out of her life forever, Marika is unable to restrain the pent-up passion of years, and she begs George to take her in his arms. This action is seen through the window by the old gypsy, who realizes that from now on she can secure money from George to keep the facts of what took place from the public. As the day dawns George begs Marika to let him go to Vogel and tell his love for her, but she, knowing that the shock would kill Gertrude and break her foster parents' hearts, refuses. Later she silently looks on with breaking heart as George and Gertrude are married. During the wedding ceremony the old gypsy enters Vogel's house and is found by the returning guests in the cellar, intoxicated. She is arrested and taken to jail. Marika learns of this and goes at once to her mother, and finds her very ill. She dies in delirium. The next morning Pastor Hoffman, who has always loved Marika, comes to the cell and finds his beloved bending over the body of her mother. He takes her into his arms and she leaves the prison with him.