Senior Inspector CHONG CHIN PANG from the Commercial Crime Bureau has been keeping a close eye on computer hacker YIU SHING TIN, but he is frustrated by the lack of evidence to convict him. Police cadet TONG KA MING demonstrates his mastery of target shooting in operations simulation but PANG deducts all his marks due to his lack of judgment. MING has had a misunderstanding with KONG KIN YEE, staff of an express carrier, but puts old grudges behind and delivers the document she has left in his father’s computer software company to the addressee. Seeing a family photo, YEE suspects that TIN is her fraternal half-brother. PANG has hatched a plan to lure TIN to strike again. Just the long arm of justice is about to reach TIN, a murder committed by an armed robber turns PANG’s scheme into futility. PANG’s girlfriend LEUNG YEE YAN has become a vegetable after a car accident. The faulty driver was none other than TIN……
