The story begins with the opening of the Hong Kong Victoria Harbour tunnel by business partners Paul Wagner and Nigel Griffith. Paul attends with his wife, and their twin infant sons, Chad and Alex. However, after the celebrations, the family is followed home by a Triad (underground society) hit squad on orders from Griffith and crime lord Raymond Zhang. A shootout ensues, in which Paul and some henchmen are killed. Paul's wife begs them to spare the kids but is killed by Moon (Bolo Yeung), the top henchman. Chad is rescued by the family bodyguard, Frank Avery, and raised abroad. Alex is dropped off on the doorstep of a Hong Kong orphanage by the family maid.