Two Hong Kong cops are sent to Tokyo to catch an ex-cop who stole a large amount of money in diamonds. After one is captured by the Ninja-gang protecting the rogue cop, the other one gets his old Orphanage gang, dubbed the "Five Lucky Stars," to help him. They don't like this much, but they do it.
洪金寶
as Kidstuff / Fastbuck
成龍
as Muscles
Yuen Biao
as Ricky
曾志偉
as Roundhead / Blockhead
吳耀漢
as Sandy
Charlie Chin Chiang-Lin
as Herb
馮淬帆
as Rawhide
胡慧中
as Swordflower / Chief Insp. Barbara Wu
曹達華
as Senior Superintendent Tsao
James Tien Chuen
as Prison Warden
林正英
as Corrupted HK Policeman
Bolo Yeung
as Millionaire Chan
