Director  Miu-Suet Lai does an about-turn and starts to film horror and bloody subjects  after focusing on problem girls and sentimental girls. There is a holiday  house in Australia, where many young people are staying, including novelists,  idle punks, etc. One day, a man arrives there from Kowloon on vacation and  then many strange things happen......

Bumbling private detective Chan Tam is enlisted by police pal Fung Chak to help in the investigation of a serial murder case. The victims - a middle-aged man killed at home, a dead woman found in the trash dump, and a teenage girl slain in the park - were all killed in grisly manners, but they didn't seem related to each other. Without any clue to follow up on, Tam is decidedly at his wits' end. But when Chak is seriously wounded by a mysterious assailant, Tam deduces that the only way to uncover the truth is to get into the mind of the deranged killer, and in so doing he is forced to face a long-hidden side of himself......

Living in Bangkok’s Chinatown, Ah Tan, whose parents disappeared  many years ago, is eager to join the police force with his friend Fengze  since childhood, but he fails. He doesn't accept it and becomes a private  detective, but he can only take on some small cases like robbery. He doesn't  make much money and has a bad reputation. He is often unable to make ends  meet, so he has to rely on Fengze to support him. One day, Ah Tan's friend  Fei Long commissions him to investigate a woman, claiming that he is being  hunted down by her. Out of curiosity, Ah Tan takes the photo and finds out  that woman is named Mo Huixin, but when he is looking for relevant insiders,  weird incidents occur one after another: people related to Mo Huixin die  successively and Ah Tan is always the first to find that....

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