The eccentric professor Collins lives completely secluded in his chaotic apartment. When the model Penny moves in next to him, he becomes fascinated of her. He drills holes in her walls and ceiling and peeps on her day and night. He loses himself in daydreams and delusions.
西蒙(史蒂夫·库根 Steve Coogan 饰)是一个整日里循规蹈矩按部就班的公务员,他喜欢有秩序的生活,但上帝似乎并不愿意成全他的愿望。一次偶然中,西蒙成为了一宗谋杀案里唯一的一个目击证人,为了杀人灭口,凶手展开了对于西蒙的追杀,更糟的是,负责调查此案的警察和凶手沆瀣一气,原本的战友变成了对手。
为了不被关进大牢惨遭被强暴的命运,西蒙踏上了逃亡的旅途。想要证明自己的清白,西蒙必须要到一卷记录了整个案发过程的录像带,而这卷录像带此时正躺在银行的保险库中。就这样,西蒙摇身一变,成为了打算抢银行的劫匪。