Ammu is a girl child transplanted from the polluted city of Delhi to the pristine surroundings of the native place of her mother in central Kerala for health reasons and stays with her grandmother. She immerses herself in Nature whenever she gets a chance to wander around and gets friends of her age including Nani, a slightly elder girl, who is visible only to Ammu. Once, when going around, she is led away by a young man who promises to take her to Nani and the inevitable happens with horrifying implications.