本片根据Ken Bruen同名小说改编，由威廉姆•莫纳汉亲自改编剧本。 　　米切尔（柯林·法瑞尔 Colin Farrell 饰）以前是个混迹在街头的痞子，蹲了几年牢被释放后决定重新做人，但却一直找不到工作。以前的那些朋友给他提供了一个替给放高利贷的金主收钱的工作，无可奈何的他只能接受。但不久后，他被一个不愿意抛头露面的女明星艾思林（凯拉·奈特莉 Keira Knightley）雇佣。艾思林不堪小报记者和狗仔队的困扰，雇佣了米切尔来给自己“清除麻烦”。当艾思林渐渐了解切米尔的为人，两人坠入了爱河。就在米切尔憧憬未来的时候，他的过去找上了门来。街头的那些违法犯罪的事情一直跟随着他。不幸的是，米切尔发现自己又莫名其妙地卷入了黑帮的矛盾中，这些矛盾直接威胁着他现在的生活，他能安然度过这些烦恼的事情并和艾思林生活在一起么？Fresh out of prison, Mitchel wants nothing to do with crime but accepts a kip from Billy, a marginal grafter, and accompanies Billy on rent collection trips. He's also old school, wanting revenge on two youths for assaulting a mendicant he's befriended. He's got a strung-out sister to protect, and he's offered a job protecting a famous actress from paparazzi. The plot lines join when Michael finds himself attracted to the actress and Billy's Mob boss, Gant, finds ways to force Michael work for him. He also warns Michael off revenge against the assailants of his friend. What are Michael's options: is there any way to avoid Gant, protect his sister, and find a path to love?