Laid-back scientist George Lam, fast-talking taxi-driver John Sham, and spunky bicyclist Maggie Cheung are brought together when they witness the murder of a man trying to keep a destructive bomb (disguised as a can of soda pop) out of the hands of some evil Japanese. When the police refuse to believe their story, they decide to find the bomb/soda can themselves, all the while being chased by two Japanese killers. Fairly silly but fun to watch.