亨利是一个调皮的捣蛋鬼，在学校他照例带领着“紫手帮”（“Purple Hand Gang”）的一众小弟们搞各种破坏，恶作剧欺负老师。不交家庭作业也是家常便饭，可他万万没想到，这次会引发随后的一系列连锁事件。学校可能会因为竞争学校的一个邪恶校长而面临着关门大吉的危险……

Sixteen-year-old Poppy has everything her unlimited credit cards can buy, and a spoiled attitude to match. After a final thoughtless prank, her exasperated father ships her off to boarding school in England. There, Poppy meets her match in a stern headmistress and a class full of girls who will not tolerate her selfishness.