Chen Zaitian (Vic Chou), the detective king of the Harbour City North District Police Station, mistakenly slept with Director Qiu's daughter and applied for transfer to the South District Police Station. Here, he met his hot-tempered partner Wu Yingxiong (Mark Chao), who was investigating the drug dreamer criminal gang. Chen Zaitian was found to have dreamer components in his body by the laboratory analyst Lan Xiying (Jane Chang), and was regarded as a poison. In addition, his usual frivolous and dissolute performance also made Wu Yingxiong very unhappy. During the investigation, the two met Chen Lin (Ivy Chen), the daughter of the leader of the Sanlian Gang. The three of them did not know each other and developed feelings during the investigation. When chasing the Dreamer criminals in the subway, Chen Zaitian saved Chen Lin, but the latter thought it was Wu Yingxiong's doing and developed a good impression of him. However, after several mistakes, she slowly fell in love with Chen Zaitian. However, Chen Zaitian always dodged and dared not accept it, because he was always entangled in the mystery of his life experience. However, these people were successively involved in a conspiracy directed by the Sarkozy terrorist organization... The film won the Golden Bell Award for Best Picture and Best Director, and Mark Chao was named Best Actor at the Golden Bell Award for this film.