An undercover cop is forced to team up with a group of unlikely allies to take down a drug smuggling ring.

The undercover agent with dragon tattoo Kowloon continually helped the police to solve mysterious cases, which made him known as a rising star. However, his impulsive personality dragged him into endless troubles. He got himself into fights with the Macau detective, as well as an American Army veteran Alexander who has a secret linkage to Kowloon’s background…

Music Writer Limin was on a road trip in Malaysia. He came across an old mansion and decided to stay to write his unfinished song. Limin became acquainted to the writer Cow who was living in the mansion. By chance he rescued Tai and Dai, a couple who loved photography. The four had a lot of strange and humorous encounters in the mansion, and had even attracted the attention of the landlord as well as the mysterious Lung Poh and Xiaodie. Xiaodie was murdered 30 years ago. They were touched by her story and decided to help her solve the murder. They asked the help from private investigator Chiyuen but he refused. So they decided to investigate for new clues themselves and surprisingly found …

Under the leadership of the general commander Li Wei, the new generation of Bawanghua Xiao Qiao, Ah, Hao Ge and Yan pig successfully broke several large-scale cases, and became famous, and the limelight overshadowed the Flying Tigers under the command of Huang SIR. A Li, KING, Shantou and Black. The two teams began to look at each other and secretly compete.