A poor little girl was abused and beaten by her stepmother in the toilet, who was later murdered. A series of mysterious murders followed. The killer was identified as a woman, and the only clue the killer left behind was a Princess Aurora sticker. Wu police (Wen Chenggen) the more deeply they investigate the case, the more they feel that the murderer is his ex-wife Zheng Shunzhen (Yan Zhenghua). This serial case is a vengeance plan. Many years ago, Zheng Shunzhen and the Wu policeman's only 6-year-old daughter was raped and killed, but the defense lawyer argued that the killer had mental problems and that the killer escaped punishment. The several people who were killed were just a prelude, and Zheng Shunzhen's ultimate goal was to kill the defense lawyer at that time. Zheng Shunzhen unexpectedly made public the scene of the police and the media focused on a garbage dump in the suburbs.