影片描写了中学生的学习和生活﹐美枝刚到一所女子学校寄读﹐就遭到以芊蒂为首的富家女生的戏弄﹐看到他们经常欺负同学﹐一次舞会中﹐遂与阿蕊等人连手对付并令她们丑态面出﹐学校举行竞技大赛﹐美技等人参加﹐却体育教师拒绝﹐此时刘老师毅然担任她们的体能训练老师。众人设圈套﹐令美枝误会离开男友﹐经过激烈的角逐﹐美枝夺得了第一名。
The crooks in London know how it works. No one carries guns and no one resists the police. Then a new gang appears that go one better. They dress as police and steal from the crooks. This upset's the natural order of the police/criminal relationship and the police and the crooks join forces to catch the IPOs (Impersonating Police Officers), including an armored car robbery in which the police must help the gangs to set a trap.
影片翻拍自1992年的同名恐怖片。 Caitlin（玛丽·伊丽莎白·温斯特德 Mary Elizabeth Winstead 饰） 聘请到一位似乎完美的新保姆 Polly（麦卡·梦露 Maika Monroe 饰）以为从此可以安心，殊不知保姆暗藏心机……一切幸福，原来只是噩梦的开始。
