富商林醒得知自己身患绝症时日无多，于是派人寻找自己失散多年的孙子林天赐（林俊贤 饰）。林醒告诉林天赐，如果他能够在一个月之内觅得知心人结婚的话，便可以合理合法的继承自己的遗产，若非如此，这笔数额巨大的财产将归于林醒的侄子罗伯特。林天赐是一个老实的好人，抽烟喝酒泡妞一概不会，眼看着一个月的期限将至，在这个节骨眼上，林天赐在快餐店里邂逅了名为乐小小（李嘉欣 饰）的女子，眼看着两人渐渐浓情蜜意起来罗伯特坐不住了，他派出了性感美艳的玛丽琳（利智 饰）诱惑勾引林天赐，成功的离间了前者和乐小小的感情。哪知道玛丽琳贪图遗产，竟然决定真的和林天赐结婚……

On his death bed in the United States Mr. Lin grants his grandson, Lin Tien-Chi, his wealth of US$300 million, but only if Tien-Chi can find a wife within a month. Tien-Chi, however, is very shy and has never had any luck with the opposite sex. Mr. Lin's nephew, Robert, who will get the money should Tien-Chi fail, does everything in his power to prevent Tien-Chi from marrying. In the end, Tien-Chi has two women to choose from: Feng Mu-Jen, who is deceiving him to help Robert get the money, and Lo Hsiao-Hsiao, a beautiful poor girl who is set up time and again by Robert and Mu-Jen so that Tien-Chi will not choose her.