A consecutive murder case taken place in Hong Kong, the victims are all prostitute, the murder technique is extremely cure, he usually drives the motorcycle when commit the crime, he will carry the weapon to grasps the victims hardly until they died. Since it always happen in Friday evening, so it’s called by the media “Friday murderer”. Cheuk Hung is ordered to handle this case, an inescapable plan is processing to catch the murderer, he asks for 50 beautiful policewomen as a bait to attract the murder around the street where he often appears, the sniper has arranged in the high place, there are plenty of police in usual wear on the street, the Ministry of Communications are also set out 30 motorcycles to comply with action. However, the mission was fail, one of colleague, Ken’s girlfriend is died, although Chuek Hing also drives his motorcycle to pursue and have a violent fight with the murder, but the murder is escaped finally. After that, all the colleagues blamed on him and his relationship between Ken is get worse…