Gao Xiang is the senior staff of the insurance, he engaged in all kinds of criminal enterprise, play the police in the hands of Shing Mun River armed robbery, the loss of $ 1.5 million, the crime is a big circle earners cross-border crimes, because sum insured in the insurance company of the Cheung. Therefore, the facts of the case started investigation to determine things there must be within the spy, this touch method from the Xiang a crime idea, if he can at the security company ambush within should to his escort car's driving route, at any time can be robbed models succeeded, Xiang So expand plan, and hooked up the manageress of the security company.