Zi Xuanyue originally lived in a wealthy family, but her parents' business gradually declined. Later, her parents committed suicide and left her as a young child. After many twists and turns, she was adopted and raised by a kind-hearted couple. She thought she could live a happy life, but everything ended on the day she graduated from junior high school. She watched her adoptive parents who loved her being killed by vampires in front of her eyes, but she was helpless. The black lord Hui Yan adopted her as his third child. She hated vampires, but she knew what her classmates at night were really like. What would she do? . .