Tang Ren (played by Wang Baoqiang) tricked Qin Feng (played by Liu Haoran) into joining the World Detective Contest in New York for a huge prize. However, as the ridiculous competition against detectives from all over the world went on, they discovered the bigger secret behind this challenge…...

After failing to get into the police academy, Qin Feng (played by Liu Haoran), the talented boy who has a stutter, was sent to Thailand by his grandmother to find his distant cousin Tang Ren (played by Wang Baoqiang), the so-called “No.1 Detective in Chinatown” who is actually an unkempt middle-aged man, to relax. However, after a night’s fun, Tang Ren became the suspect of a bizarre murder and had to run away with Qin Feng…… Can they escape from the police, the bandit and the gangster, find the lost gold and find out the real murderer to prove their innocence in just seven days?...

Li Weijie alongside his wife Ayu had been striving for life for 17 years in Thailand. They had two lovely daughters. He ran a network company in his forties, and was well liked by small town residents. However, his peaceful life was broken by an unexpected visitor. This border town full of smuggling and drug trafficking was a place where various powers intertwined to crush fairness and justice. Li Weijie's eldest daughter was raped by the inspector general's son and she killed him by mistake during resistance. As he had witnessed inspector general’s illegal punishment, Li knew laws couldn’t help them. In order to protect his daughter and his family, Li Weijie buried the corpse to cover up all the evidence. In the intersection of time and space, he fought with the police in body and mind....

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"Top "killer" Zhou Quan (played by Andy Lau) accidentally exchanged identities with a lonely walk-on Chen Xiaomeng in bathhouse because of a soap. After Zhou Quan lost his memory, he started to live like Chen Xiaomeng and got to know a media director Li Xiang (played by Wan Qian), while Chen took over Zhou's place and became a killer reluctantly. A series of ridiculous stories started from here and they started to take a look at themselves and "change a way of living" too. The killer reached the bottom and examined at his love and life again, the walk-on pretended to be a killer and reshaped his life. "...

In the cold winter of 2001, a murder case occurred in the affiliated hospital of a printing factory in Haizhou City. Rookie policeman Leng Xiaobing and his senior rushed to the scene after receiving a report, but accidentally faced the murderer of the serial murder in Haizhou City. Leng Xiaobing was timid and afraid to shoot. The murderer fled from the scene and killed his senior, Li Lan. Another witness at the scene is a victim, Xia Mu, hiding under the bed. In order to stay in the police force, Leng Xiaobing concealed the fact that he did not dare to shoot, Xia Mu did not expose him either. So far, the murderer has been in the hiding, and the Haizhou case is still pending. Sixteen years later, Xia Mu came to the force for an internship. Threatening with the fact that Leng Xiaobing didn't dare to shoot, she coerce him into investigating the case with her. Just as the two pointed their suspicions at the father of the psychologist Shen Yu, Shen Yu also launched a plan to create a crime of imitation. Then a corpse that had been dead for more than sixteen years caused the three of them to fall into the dark night of souls. The three finally joined forces to trap the real murderer....