Ed Lover and Doctor Dre are two inept barbers. Deciding that maybe they ought to find another line of work, they join the police. A big mistake, as far as their duty sergeant, Sgt Cooper is concerned, who proceeds to harass them at every turn. Despite this, they discover a major crime, and proceed to solve it in their own unusual fashion.

中学生塔德不但聪明、人缘好，又有一个漂亮的女朋友，他正一步步实现进入哈佛就读的梦想，但是，眼前唯一的阻碍就是他的微积分老师穆勒先生。这个老师傲慢、霸道又有虐待狂，只有他才能提供塔德进申请哈佛的推荐信，但是，光凭塔德奇烂无比的数学成绩，这一切唯有等奇迹出现了！为了完成自己的心愿，塔德找了一名数学家教薇琪，她年轻又貌美，可惜的是已名花有主，她的丈夫不是别人，正是塔德的数学老师穆勒先生！起初，塔德的家人与朋友都怀疑薇琪的家教课，没想到，塔德的数学成绩突飞猛进，同时，他的心跳也等级加速，因为......他无药可救的爱上了师母薇琪！这一道三角爱情习题复杂难解，最后，是谁能解出完美答案呢？