홍콩 경찰청 강력계 소속인 악바리(성룡 분)와 위키(원표 분)는 엄청난 액수의 보석을 가로채 야쿠자와 접선하기 위해 일본으로 달아난 전직 경찰을 체포하라는 특명을 띠고 일본으로 건너 가지만 벽에 부딪치자 홍콩으로 연락, 경찰 총경에게 부탁해 지난 날 같은 고아원 출신인 양배추(홍금보 분)의 도움을 청하게 된다. 양배추는 완두콩(증지위 분) 등 고아원 형제들을 규합, 여행사 직원 여왕벌(호혜중 분)과 함께 일본으로 건너가는데 여왕벌의 미모에 반해 갖가지 촌극이 계속 연출된다.
Mo is a gifted student in one of the village's dozens upon dozens of kung-fu schools. But when the master's away, he leaves the place in the hands of his best student Kang. But Kang rules with a cruel, iron fist. Little does anyone know, however, Kang is really the pupil of his Masters' old nemesis Ken Mo Fung 'The Golden Tiger'. Fung has instructed Kang to discredit the school publicly, then kill his Master by poisoning his tea.
Ko Ming Chung, a wildly popular movie actor is having an illicit affair with similarly popular thespian Ai Ling. Though Ming Chung's wife quietly puts up with this infidelity, so long as he does not try to leave her, Ai Ling's spouse is less forgiving, a middle-aged oaf prone to violence. When the tabloids get wind of the liaison, the two secret lovers find themselves headline news throughout the colony. Ming Chung's wife soon starts to mount a media blitz, painting Ai Ling as a husband-stealing, home-wrecking shrew.
The five members of the band the Wynners are all packing up, ready for a singing tour in USA. Uncle Kau, a boss of a triad, planning to exchange their guitars with narcotics inside with the Wynners', so that their narcotics can be carried to USA. But he fails, as the Wynners has to cancel their plan, for a fire broke out in the night club. Uncle Kau thus dispatches three of his followers Wo, Anny and Jane to steal back the guitars.
