{Xia Yao} is a kindergarten teacher who loves composing children's songs. Her peaceful campus life is broken by a strange nursery rhyme. "The moon crescents, shining in the underworld, the baby cries, looking for parents." Whenever children sing this melody, strange things happen frequently in the kindergarten: toys automatically shift, children collectively have nightmares, and a woman in white appears in their dreams. {Xia Yao} tried her best to stop the spread of nursery rhymes, but found that the children seemed to be bewitched and could not stop at all. By chance, she found an old photo from the Republic of China in a dusty attic. The kindergarten teacher in the photo looked exactly like herself. It turns out that this teacher from the Republic of China caused the accidental death of his child due to negligence. He committed suicide in the attic out of guilt. He wrote this nursery rhyme before his death, and his ghost has been trapped in the school for hundreds of years. Now, the dead soul regards {Xia Yao} as a substitute and wants her to repeat the tragedy. In order to save the children and escape from fate, {Xia Yao} must recover the bones of the children, let the deceased rest in peace, and resolve this obsession that spanned a century.
