Millionaire Tiger Hung (Louis Koo) is told to find a cure at the mysterious Omei all-women martial arts sect; and there he meets Omei's young master May (Sammi Cheng). The healing process moves smoothly until May's big sister Misery (Li Bing-Bing) shows up and challenges May to a duel. Misery has lost her mind and she threatens to destroy Omei unless May beats her with the sect's long-lost "Heartbreak Sword Technique"! (Mei Ah)