塞斯(乔纳•希尔 饰)和埃文(迈克尔•塞拉饰)是一对不善交际、性格迥异的好朋友,二人即将高中毕业,对没有彼此的大学生活既焦虑又恐惧。 一个周末,二人的“桃花运”来了,因为他们收到了一个请柬,邀请他们去参加一个几乎完全是由漂亮女孩们主办的舞会,条件是他们要提供舞会上所需的各种酒类。令人讨厌的朋友弗盖尔(克里斯托弗•米恩特兹•普莱斯 饰)也加入到他们的行列,还给自己弄了一个假身份证,取了“迈克•拉文”这样愚蠢的假名。 舞会上,塞斯盯上了舞会的组织者茱尔斯,埃文看上了 与他一起上数学课的女孩贝卡,弗盖尔则选择了装扮刺激的妮科拉。 然而一系列不幸的巧合将三个人带到了一个陌生的地方,还让他们与斯莱特和迈克尔斯警官发生了冲突。对于三个即将高中毕业的小伙子来说,这可能是他们经历的最可怕、最让人感到羞愧的一个夜晚,然而,也是一个值得他们回忆一辈子的夜晚。Seth and Evan are best friends, inseparable, navigating the last weeks of high school. Usually shunned by the popular kids, Seth and Evan luck into an invitation to a party, and spend a long day, with the help of their nerdy friend Fogell, trying to score enough alcohol to lubricate the party and inebriate two girls, Jules and Becca, so they can kick-start their sex lives and go off to college with a summer full of experience and new skills. Their quest is complicated by Fogell's falling in with two inept cops who both slow and assist the plan. If they do get the liquor to the party, what then? Is sex the only rite of passage at hand?