On the eve of their wedding, Feng Yin, a college English teacher, assisted a woman named Zhen Yunxia to commit suicide. The video spread throughout the Internet the next day, causing an uproar. After Feng Yin surrendered, netizens and the police dug up a male body at the scene of the incident. Zuo Lun, the captain of the criminal police detachment, took over the case. He abandoned the traditional investigation methods and used the deductive reasoning method used in movies and TV series to solve the case (this method was once considered by his little follower Dangyang to be a scapegoat). As you can imagine, Fengyin and the revolver are very different. They became cunning suspects and stupid detectives in their own eyes. It wasn't until Zuolun's girlfriend unexpectedly became good friends with Feng Yin that the relationship between the two eased. Later, a skull was found in Shangtang Manor, which was implicated in an accidental drowning and disappearance case many years ago. In a video posted by an unknown person, Zuo Luo unravels the secrets, crimes and truth surrounding members of a university Go club many years ago. However, Feng Yin, who finally got rid of the suspicion, was domestically abused shortly after her marriage. After the successful divorce, her ex-husband died at home, putting her in the position of a suspect again.
