The successive murders in Longfan City are exactly the same as the killing method of a suspense novel serialized on the Internet. "Slow, doubt" is based on the crime. When all the clues point to Qin Ming high school classmate Fang Chi, Qin Ming's first love Han Yue also seems to be in danger. After Qin Ming confronted Fang Chi, Finding things are not so simple. (Source: Douban).