刑事犯罪检察官的迈克尔·克莱顿(乔治·克鲁尼 George Clooney 饰)曾在纽约法律界风光一时。离职后又在一家大型私人法律事务所谋事。在新老板马蒂·巴彻(西德尼·波拉克 Sydney Pollack 饰)的督促下,开始了清理不良记录的工作中。但工作和个人生活也因此改变:妻子孩子离他而去,债务让他没了以前的光彩。财政状况让他只得继续在工作中煎熬。同时,他又因为公司的肮脏业务而卷入一场价值高达数百万美元的集体诉讼案当中。而正当他利用自己的关系和丰富的办事经验“拨开迷雾”成功解决这场诉讼案时,老板手下的另一个办事员亚瑟·艾登斯(汤姆·威尔金森 Tom Wilkinson 饰)以及女诉讼律师凯伦·克劳德(蒂尔达·斯文顿 Tilda Swinton 饰)等人的一一卷入,使得迈克尔的事业和人生再次面临新一轮严峻的挑战……Michael Clayton, a high-priced law firm's fixer, leaves a late night poker game, gets a call to drive to Westchester, and watches his car blow up as he's taking an impromptu dawn walk through a field. Flash back four days. He owes a loan shark to cover his brother's debts (Michael's own gambling habits have left him virtually broke). His law firm is negotiating a high-stakes merger, and his firm's six year defense of a conglomerate's pesticide use is at risk when one of the firm's top litigators goes off his meds and puts the case in jeopardy. While Michael is trying to fix things someone decides to kill him. Who? Meanwhile his son summarizes the plot of a dark fantasy novel.