在这部魔法老师喜剧/科幻片中,在外星人的眼中，地球人就是供他们玩乐的消遣。一群外星人打了一个赌，赌注是地球的存亡。他们在地球上随机选了一个人，赋予他心想事成的超能力，如果这个人最终成为了贪得无厌的恶人，外星人就选择把地球毁灭，但如果这个人依然维持着善良的本性，则意味着地球仍然有着继续运转的意义。
平凡而又内向的中学老师尼尔（西蒙·佩吉 Simon Pegg 饰）成为了这名干系到地球存亡的天选之子，在拥有了超能力后，尼尔的身边发生了一连串有惊无险令人不知该笑还是该害怕的意外。与此同时，尼尔默默爱慕的女子凯瑟琳（凯特·贝金赛尔 Kate Beckinsale 饰）也被卷入了危险之中。
When some aliens, who travel from planet to planet to see what kind of species inhabit them, come to Earth. And if they are, according to their standards, decent, they are welcomed to be their friend. And if not the planet is destroyed. To find out they choose one inhabitant and give that person the power to do whatever he/she wants. And they choose Neil Clarke, a teacher who teaches the special kids. He is constantly being berated by the headmaster and is attracted to his neighbor, Catherine but doesn't have the guts to approach her. But now he can do anything he wants but has to be careful.
丹尼斯是条聪明的狗。屌丝的右手，还不如一条狗。这个翻译片名，原来是个误会。感觉是西蒙近几年最有趣的喜剧电影（不包括血与冰激凌系列）。。绝对的权利导致的不是腐败而是疯狂。人性的考验。人不如狗系列。被名字耽误的好电影。令人捧腹的西蒙·佩吉。随便写几个让人印象深刻的点。
