“霸天虎”的先遣部队旋风和毒蝎袭击了美军位于卡塔尔的军事基地，与此同时，路障帮助他的搭档迷乱潜入了美国总统的座机空中一号，通过电脑获悉，要想找到威震天就必须找到维特维奇家族的那副眼镜，上面有威震天关于能量块的信息扫描，而它现在的拥有者萨姆•维特维奇（希安•拉博夫 饰）成为了“霸天虎”攻击的目标。
萨姆是名高中生，学校里没有人相信他讲述的关于这副眼镜的历史，失望之余，萨姆把眼镜放到网上拍卖，然而从未引起买家的兴趣。这时父亲送了一辆破车给他，这辆车恰好就是“汽车人”大黄蜂的变形。大黄蜂帮助萨姆交上了漂亮的女朋友（梅甘•福克斯 饰），但很快就遭遇了“霸天虎”的袭击，擎天柱带着其他“汽车人”赶到，一场机器人大战由此拉开了序幕。

When two college students, Sam and Thea, meet Coles at a party, their mutual attraction is immediate, leading to a passionate and awkward night together, and the onset of an intensely charged bond. As they continue to push the sexual boundaries of their friendship, however, they are tested by Sam and Coles' incipient romance and Thea's increasing recklessness, until the relationship dissolves amid a cloud of fear, resentment and mistrust. Eight years later they reunite. An animator for a high-profile ad agency, Coles now lives with Claire, his girlfriend of five years. Thea is happily married to Miles, with whom she owns a flourishing restaurant. And Sam has just returned to Manhattan after working in London where she recently broke off her engagement. Yet upon reconnecting, the three are drawn back into the complicated dynamic that defined their relationship from the start and are forced to confront the true meaning of commitment and love.

　　艾丽有一个显赫有钱的家庭，这恰恰成为她感情不如意的根源——父亲不赞成她和飞机师卫斯理结婚。艾丽一气之下离家出走，前去找卫斯理，不料途中钱财遭抢。遇上记者沃恩，沃恩得知艾丽是个不平常的富家女，确信艾丽非常有新闻价值，可以炮制出吸引眼球的新闻，便一路与艾丽同行。路上车前进遇阻，乘客得在半路住一晚旅馆，而身无分文的艾丽只能与沃恩同屋，并在床上用毯子间隔开两人来睡。 　　旅途颠簸，意外连连，二人共同经历了不少难忘之事。感情在渐渐滋长。艾丽的目的地就要到了，两人的心中都有些欲言又止的情愫。面对自己本来想要寻找的卫斯理，面对父亲门当户对的思想，艾丽和沃恩的感情不知走向何处。