The movie is based on the novel Xian He Shen Zhen by Wolong Sheng. Ma Kwun-mo (Tony Leung) is saved by the stunning Pak Wan Fai (Anita Mui) and her pet crane Yuen Yuk. In gratitude, Ma promises not to reveal Pak's identity to anyone. Later, at a kung fu meeting attended by Ma, the evil So Pang Hoi (Lawrence Ng) orders a fleet of poisonous bats to kill every other student at martial arts schools. His plans are thwarted by Yuen Yuk. While hurriedly searching for a remedy for the bats toxins to treat stricken pupils, Pak encounters the embittered Butterfly Lam (Rosamund Kwan), and soon the two are embroiled in a vicious battle using lethal sound waves. Meanwhile, So continues on his quest to take over the world. (RottenTomatoes)