Prom Pact is set at the height of prom season. High school senior Mandy Coleman and her best friend and fellow outsider Ben are surrounded by over-the-top '80s-themed Promposals. However, Mandy keeps her eyes focused on a different goal: her lifelong dream of attending Harvard. When she finds out her acceptance has been deferred, she is determined to do whatever she can do to get herself off the waitlist, even if that means asking for help from the one person she abhors - popular all-star jock Graham Lansing, whose father is a powerful senator and Harvard alum. Once Mandy becomes Graham's tutor, she begins to realize there's more to him than she thought and perhaps something more to life than Harvard.
故事发生在一九三九年的夏天,克里姆(沃尔特·皮金 Walter Pidgeon 饰)和妻子米尼佛夫人(葛丽亚·嘉逊 Greer Garson 饰)住在英国郊外,两人结婚多年,生了三个孩子,生活幸福美满。克里姆的大儿子韦恩(理查德·内伊 Richard Ney 饰)爱上了花会创办人的孙女贝尔(特雷莎·怀特 Teresa Wright 饰),情投意合的两人很快走到了一起。战争开始了,韦恩想要为国效忠,赶往了前线,而克里姆和米尼佛夫人则在后方支援。某日,一名德国飞行员受伤闯入了米尼佛夫人的后花园,米尼佛夫人凭借着自己的勇敢与智慧协助警察成功将其捉拿。米尼佛夫人和贝尔小姐在送韦恩前往驻地的途中遭遇了空袭,一时间凶多吉少。