It's been three years since the girl's death, and now she's reappearing in front of the house. The police chief arrives to find the body of the girl, a 17 year-old girl, lying in the hallway of her school. She's probably been murdered, the police chief tells us, because the girl has a bad relationship with her parents. The girl, whose name is Xiao, lives alone, because her parents have forbidden her to go to school. The neighbors call the police because of the blood on the door, and the police decide that the girl is probably a suicide victim.