Crowds of people are surging and the square is broadcasting on the big screen, and recently unknown people have thrown water from high in the channel, resulting in hundreds of citizens being injured, and the police have hung 900,000 red to arrest the murderer.
Johnston (Andy Lau) knocked on the guide rod and tracked the scruffy middle-aged man in front of him with his sense of smell. Situ Fabao (Guo Tao), who has been observing the crowd at a short-distance high-rise building, after discovering Johnston (Andy Lau), was immediately sent by the police officer He Jiatong (Zheng Xiuwen) to follow him, and the two met, and the murderer who threw corrosive liquid from high altitude was arrested.
He Jiatong (Zheng Xiuwen) admired Johnston (Andy Lau's) ability to solve cases, asked him for help in finding xiaomin, a school sister who disappeared ten years ago, and told Johnston (Andy Lau) that Xiaomin had stood downstairs for a few days and nights before she disappeared, and even self-harmed herself with a knife on the last night, but she was unwilling to get close to Xiaomin because Xiaomin's grandmother killed her boyfriend and fried her, and Xiaomin's mother killed her husband to pickle her, but now she regrets it very much. Johnston (Andy Lau) also moved into He Jiatong's home because of the decoration of the home. In the process of searching for Xiaomin, the two crack various unsolved cases, and also find out the truth about Xiaomin's disappearance ten years ago.
On 17 April 1992, the Kowloon public mortuary murder case. Johnston (Andy Lau) and He Jiatong (Zheng Xiuwen) play the deceased uncle and the "murderer" Dezai in the case, restore the crime scene, from the TV set smashed to the killing of the deceased, to find out the suspicious point, found that there is a third party at the scene, the "murderer" Dezai was tragically poisoned, the suspicion was fixed on Dezai and Qiu Uncle's colleague Li Desheng, and the case was jointly concluded at the Macau casino.
Johnston (Andy Lau) speculated through the timeline that on the day of the crime, the three people at the scene were watching the live horse racing, Dezai and Qiu Uncle bought the lottery head together and won the six rings lottery special prize, and the real murderer Li Desheng was angry from the heart because he had not cooperated with the two, killing the two and taking them away. And merged with the Macau casino knock case. Li Desheng is not a good business person, after opening a factory to lose money, gambling failed, trailing the winner, hammering his head, and robbing the victim of money. Johnston (Andy Lau) and He Jiatong (Zheng Xiuwen) lured Lee Tak-sheng into the crime and arrested him.
When Johnston (Andy Lau) investigates Xiaomin's case, he thinks of the extreme behavior of Xiaomin's grandmother and mother, and speculates that he was not waiting for He Jiatong (Zheng Xiuwen) that night, but waiting for a boy, a boy whom Xiaomin loved deeply.
This involved Azu, a handsome boy in he Jiatong's (Zheng Xiuwen) upstairs neighbor, who immigrated to Brazil in 1997 and returned to Hong Kong, and the two went to Azu's storefront, and now Azu is a teppanyaki chef. Knocking on the side of Azu denied acquaintance with Xiaomin, but Johnston (Andy Lau) still tasted a different taste through Azu's craftsmanship, and Azu's restlessness when mentioning Xiaomin caused the taste of the meal to be significantly salty. After that, the two follow Azu, so they also discover Azu's improper relationship with the female manager of the hotel, and witness Azu's wife, a pregnant woman with a big belly, and the scene of the rape of the female manager's husband.
Serial murder of taxi drivers. After speculating that Amin left alone at night, Johnston (Andy Lau) TostuTu Fa Fa (Guo Tao) found women who had disappeared in recent years (all of them disappeared after falling out of love) and locked them on several suspect taxi drivers.
Johnston (Andy Lau) and He Jiatong (Zheng Xiuwen) arrived at the suspect Chen Guang's home, Chen Guang's spirit has a very serious problem, naked upper body, but wearing a lady's baseball skirt and baseball shoes that do not belong to her, He Jiatong (Zheng Xiuwen) asked him if he had ever carried a girl in a baseball uniform before, and Chen Guang's answer was yes, taking the two to find the girl, but found several white bones in the courtyard and wine tank. He Jiatong (Zheng Xiuwen) was slightly out of control of his emotions, and had a fierce conflict with Chen Guang, seriously injured, in a critical situation, Johnston (Andy Lau) with many years of experience to bring Chen Guang to justice, which also staged a blind driving scene, He Jiatong (Zheng Xiuwen) was also sent to the hospital for treatment. Situ Fabao (Guo Tao) brought bad news, and among all the white bones, there was no bone of the missing xiaomin.
The truth about Xiao Min's disappearance. Johnston (Andy Lau) recalls the whole process of Xiaomin's disappearance, finds the flaws, and comes to Azu's storefront again. The storefront was very quiet, "I have something to do with Azu, is he there?" Johnston (Andy Lau) said that a woman stood up from behind the table, it was Azu's wife, "he is not there, I just had a fight with him", her voice sounded a little sad, the woman poured Johnston (Andy Lau) a glass of wine, the air was filled with a trace of blood, Azu and the female manager had been killed. Johnston (Andy Lau) came here to verify one thing and told a story to the woman.
Xiao Min was afraid that she would never find the boy again, and she didn't even know where to find him, but she didn't give up, she told herself to calm down. The girl hid in the closet and boarded a cruise ship to Brazil, but she hid for twenty-seven days. The locals adopted her, changed her name, changed her surname, and have been lurking around the boy, and when she grows up, she goes to plastic surgery and successfully chases the boy back, but unfortunately the boy is naturally careful, and the marriage has come to an end. ”
The woman has been unable to cry, pregnant, the amniotic fluid is broken, but johnston (Andy Lau) killed, just when He Jiatong (Zheng Xiuwen) came, in an emergency, the two could not bear it, help the woman, and Xiao Min, leaving a baby girl, and treat it as their own, and Xiao Min died due to childbirth.
The whole play ends.