炎炎烈日下，17岁的珀迪和他15岁的弟弟马肯齐相依为命，艰难求生。珀迪在一家酒店大楼里打扫卫生，马肯齐偷窃游客钱财。在青春期的鲁莽和成年人生活的艰难中，他们不得不在这个令人心碎的甜蜜旅程中相互支持。这或许是他们青春期的最后一个夏天。

货车司机黄家驹（成龙）赴美向移居美国的骠叔祝贺新婚之喜，知晓其打算婚后与黑人妻子过安静的晚年生活，经营多年的超级市场也已卖给了年轻寡妇Elaine（梅艳芳）经营。由于一见面就对Elaine有好感，黄家驹主动协助Elaine打点起业务来。　　不久，以Johnny为首的一帮朋克党开始恶意捣乱破坏超市，面对他们，黄家驹面无惧色勇敢地用起了自己的拳头…

A charming guy attempts to pick up a woman in a bar by spinning a tale involving spies, implanted microchips and the dangerous military scientist hunting him.

Follows an Italian con-man who pretends to be a prince and goes to Mexico City to exploit the elite's fascination with European Nobility. They comply with his every request, even giving him their daughters' hands in marriage.