Bloody Friday

In Hong Kong someone is murdering call girls every Friday night Supercop Ko goes into action but engenders the enmity of Ken another cop when the murderer kills Kens girlfriend during a stakeout Ko also must protect Maddie a lively prostitute who survives one assault and whom the murderer has promised to kill The murderer teases Ko with phone calls and letters announcing victims ahead of time and threatening Kos wife and daughter This may be too much for the marriage to endure and a separation looks likely In fatigue and desperation Ko takes up with Maddie Can Ko protect his family save Maddie catch the killer and avoid internal police strife