The "white moonlight" that the heroine Lin Wanwan wore had only three sentences in the original book: "Gu Yanche's only warmth died in an accident, and Gu Yanche became a demon from then on." She must avoid death within three days and at the same time prevent Gu Yanche from turning black. But when she started to act, she discovered that there were cracks in the world - some "people not in the book" were observing her secretly; and that gloomy young man, Gu Yanche, looked at her eyes, and occasionally there was a moment of clarity and sadness that "should not belong to the age of seventeen".
