当红股票经纪方进新(刘松仁)被相交数十年的朋友丁蟹(郑少秋)杀死后,所遗四子女得继室罗惠玲(蓝洁瑛)照顾长大成人,长子方展博(刘青云)在事业迷茫之际得其生前旧友叶天(罗乐林)教诲,决定继承父业。得悉当年被关进台湾监狱里的丁蟹已潜逃返港时,方展博立誓要为父报仇,终令其再入 监狱,却也因此得罪了其有庞大黑社会背景的儿子丁孝蟹(邵仲衡)、丁益蟹(陶大宇)等人,弄得一家人除他之外先后都死于这伙人之手。 丁蟹获提早假释出狱进军股票界,不想事业竟一帆风顺,方展博在众人,尤其红颜知已阮梅(周慧敏)和龙纪文(郭蔼明)、好友陈滔滔(林保怡)的帮助下,欲借股票把丁蟹彻底打败。When their family's entire fortune is wiped out after making the wrong bet on the Hong Kong stock exchange, an investment financier forces his sons to commit suicide before following after them.