A policeman named Robert is assigned in a search and rescue operation for a camper who is reported lost a few days ago. He went to the site and as he goes deeper in the forest, he discovered a trail of decaying bodies. While he identified the corpses and found out that the missing camper is among them, he heard a scream. He hurried to where it came from and find a run-down cabin and discovered a little girl hiding in the dark. He brought the little girl with her back to their station to find her identification but no result pop-up.
His partner told him that the child needs a home while they were awaiting Child protective services, hesitant but Robert took responsibility and take the child in his home. The child don't speak nor respond to his questions so he decided to name her lea. Robert told lea stories about his family in chance to gain her trust and sang her a lullaby to fall asleep, he told lea that the lullaby he's singing was her daughter's favorite.
The next day, one of Robert's neighbor was found dead in their homes but the culprit was nowhere to be found. The same thing happen again after a week and then the next. Robert investigated the case and found out that before the victims got killed, they will always hear a song: "The more we get together", the same song he always sang to lea for her to fall asleep. He became suspicious and stayed with the child until she fall asleep. Robert heard a scream that made him wake up. He searched his house for the child but it was gone. He hurried to one of his neighbor's house (where the scream came from). The corpses of his neighbors were lying around while a song is being played. Lea appeared in the dark holding a knife and blood all over her shoulders. Singing the lyrics of the song, lea attacked Robert. He tried to shoot the murderous child but cannot, because he cannot pull the trigger to a child. Robert was killed in the accident and Child services took lea in without knowing what really happened that night. Lea is now with her new foster family and the murder intent still lives.