Shen Shengyi, an informant, is exposed and  killed. Sergeant Cao reconvenes the five lucky starts with outstanding  service to fulfill the mission. However, only Caloglossa agrees to help.  Caloglossa has to choose five members from the police force to rebuild the  lucky star team, so chosen Dog Lun, Fatty Panther, Rambo, Band Yau and  Libogen. They are trained by the inspector for one week for the mission of  stealing diamonds from the den of the Japanese mafia Oriki Yukio, and trading  with Libyan terrorists....

Fresh from prison, five friends try to stay crime free but inadvertently find themselves caught in a Triad war....

Chou Sai-Cheong. a bitter supervisor of a Hong Kong private security company, teaches unusual guard tactics to new recruits such as electric mats, parachuting off burning buildings and counter-attacking gunfire. He was secretly observed by his new boss and，unimpressed by his work, the new boss demotes Chou and promotes Chou's assistant Sam. Under the leadership of Sam, Chou and new recruit Bruce Tang encounter a slew of misadventures, including pursuing stowaways on a party boat. Bruce ultimately falls in love with one of the stowaways. Finally, they all get entangled in a plot to steal one of China's most prized treasures on display in Hong Kong, and in a plot involving some missing government money that the security officers were guarding....

A psychiatrist donates his time to help the mentally ill street people of Hong Kong. A reporter who hears about his activities accompanies him on his rounds....

Undercover cop Muscles enlists his childhood friends, the "Five Lucky Stars", to travel to Japan to help him catch a Yakuza group....