In Hong Kong, an elite gang of robbers - regarded as somewhat of a crime dream team - is formed, each member selected for their previous well-planned, swift, and successful operations. They are fearless and lethal, even going so far as to kill an undercover cop to humiliate the police. However, internal strife is brewing among the team. Three of its members plot to get rid of the leader, dissatisfied that his share of the loot seems disproportionate. The questions remain: will this faction of the gang overcome their leader, and could this gang of strong-minded thieves hold up without him?

Inferior gangster Flying Dragon has a bad habit of gambling, he thus offends the three great gamble deceivers. Luckily his younger cousin, Roy, who comes back from America is extraordinarily lucky, he can win every round of the game and saves Flying Dragon. Flying Dragon hence brings Roy to Mahjong casino to earn money for him. Roy observes the rivalry between two Mahjong geniuses Hua San Yuan and Ge He Qing by chance, he witnesses the fate of them - one turns to be insane and one becomes bankrupt, and decides not to snatch the reputation of "The King of Mahjong". Though Roy has no desire to seize the fame, his good luck elicits the worry of aggressive Mie Luo who then plans to harm Roy.