On the day of the wedding, the groom Rong Jingxuan was found drowned in the hotel bathtub. The bride Su Wantang did not cry or fuss. Instead, she smiled and handed the police a premarital examination report, which clearly stated that "the groom's semen contains lethal narcotic residues." After the criminal police captain Lu Zhengting arrived at the scene, he discovered that this was not only a murder case, but also secretly implicated in the unsolved case that he had failed to solve ten years ago - the death of Su Wantang's sister. Is the bride an avenger or a murderer? The mother and son of the Rong family each have their own ulterior motives. Cousin Jiang Caiwei secretly provides clues. Personal doctor Zhao Yuan hides the secret of medicine. The night phone call from the deceased's brother Rong Jingchen makes the case even more confusing. Every time a layer of truth is revealed, Su Wantang's past reappears bloody, and Lu Zhengting must find the person who controls everything before she completely falls into the abyss.
