齐欢畅（欧阳震华 饰）赌术天赋过人，18岁就跻身世界扑克大赛的总决赛。可是决赛前一时大意，竟遗失了3岁的弟弟齐欢乐。欢畅十分自责，以致在决赛时神不守舍，赌到一半时直接放弃跑出来寻找弟弟，这样他的对手乔初正（苗侨伟 饰）不劳而获的得到了扑克之王的称号。一晃十几年过去了。弟弟欢乐一直没有消息，欢畅自此彻底沉沦，每天以赌来麻痹自己，而且不赌到输个精光不罢休。欢畅流落到了菲律宾，每日都到乔正初的赌场度日。在赌场打工的周福荣（许绍雄 饰）不忍心欢畅这样折磨自己，用尽一切办法劝他戒赌，乔正初亦伸出援手，为他安排工作，帮他重新做人。欢畅十分感激福荣和正初，三人成了莫逆。这日欢畅在赌场遇上烂赌女青云，和福荣捉弄了青云一番，二人不打不相识，成了朋友。欢畅感到是时候回港找寻亲生弟弟了，于是踏上了回港的飞机。

Chai Foon-Cheung has not won a single game since his defeat in the World Poker Championship twenty years ago. It is the bad luck he has had all these years that has earned him a job in the casino. Ironically, the man who hires him is one of his then competitors Kiu Ching-Cho.