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.
Two unlucky thieves break into a just murdered man's hotel room and steal his passport, with a hidden microfilm, wanted by a triad boss. Two ass-kicking women cops—one Chinese, one British—are on the case.
