A common thief and an employee of a Hong Kong stock company try to help an amnesia-plagued undercover cop to regain his memory and locate the whereabouts of the 50 million dollars cash used in a drug deal. In the meantime, they try to avoid becoming victims of the crime-lord that was responsible for embezzling 50 million dollars out of the stock company.

A respected and well liked gang-boss is betrayed and killed. One of his three adopted sons are to take his place. One of them is the traitor.