影片改编自著名漫画大师弗兰克•米勒的经典同名漫画，由三个故事组成，都发生在虚拟的罪恶之城，这里，警察和暴徒已无分别，暴力摧毁一切，也保护一切。

不久的未来，毒品泛滥已经失去控制，一种极易上瘾的非法药品“D药丸”在美国境内流行，政府当局只好利用高科技监视系统对抗失控的局面。卧底的缉毒探员弗瑞德（基努•里维斯 饰）化名巴布•亚特，试图追踪毒品来源，这样，他与小毒贩唐娜•霍桑（薇诺娜•瑞德饰）、吸毒者吉姆•贝芮斯（小罗伯特•唐尼饰）、厄尼•洛克曼（伍迪•哈里逊饰）、查尔斯•费克（罗瑞•考克兰饰）等人住在一起。但实际上，弗瑞德也被“D药丸”的毒瘾深深吸引。随着毒瘾越来越深，他逐渐模糊现实与虚假间的界线，失去神智的弗瑞德，不断追寻大毒枭的隐藏之处，毫不知情自己一直置身于幕后黑手的摆弄。

Austin actor Scottie Johnson is loving life until his new girlfriend Ebby tells him she can't date another broke artist. In an attempt to secure her love, he makes a promise to take his career to the next level. Around the same time, Ebby's wild, identical twin sister shows up. As Scottie gets closer to the biggest audition of his career, he also gets closer to Ebby's sister. S...