在这部鸿运当头喜剧/惊悚片中,吴大福与老虎仔兄弟情深，老虎仔因意外入院，昏迷不醒。大福即往泰国向灵神祈求，甘愿以自己所有折半换回老虎仔一命。老虎仔果然康复。兄弟分别追求两位漂亮女护士。但大福发觉自己的东西开始减半，急忙找术士卜问避祸……
In order to save his brother's life, Da-Fu asked for the Gods' blessing and offered to give up half of his life. His brother was safe, but Da-Fu became increasingly paranoid as he became convinced that his end is near.
