曾經三次婚姻失敗的年輕富商程仲森(劉德華)邂逅賭場跳舞女郎米蘭(舒淇)，把她從草根世界帶進華衣金鑽的上流社會圈子。這對來自天堂與地獄的男女，從互相猜疑、遷就、包容、支持的情況下，最終獲全城認同為郎才女貌的天作之合，可是當談到結?階段時，森卻請律師草擬了一份「婚前協議書」，令她懷疑眼前的男人從來沒相信自己付出之真愛。

Sam (Andy Lau) is the most eligible bachelor in town - he's young, smart and rich. However, every success has its price. Sam has already divorced three times and finds himself crawling back to the game of love sooner than he has expected. It is love at first sight when Sam chances upon Milan (Shu Qi) at a Macau casino. She is a part-time poker dealer and a full-time cabaret dancer, seemingly not the perfect match with Sam's life. While Milan is being groomed into a society woman by experts galore, Sam is starting to have cold feet. He takes his lawyer's advice and signs a prenuptial agreement without consulting Milan. This time, he is gravely mistaken, as this woman has a heart of gold and is looking for real love rather than fame and fortune.