描述美国政府的细菌战实验室遭遇意外，一些足以令人致命的病毒从实验室的容器中流失，将实验室中几名科学家杀死。其中最厉害的一种病毒称为“撒旦病菌”，它能够杀死任何人，而这种病菌可能被一名疯子偷去了，于是当局想尽办法追踪捉拿这名疯子。

In the Post-World War II, in Los Angeles, a criminal shots and kills a police officer in the middle of the night. Without any leads, the chief of the LAPD assigns Sgt. Chuck Jones and Sgt. Marty Brennan to investigate the murder and apprehend the culprits. When the dealer of electronics devices, Paul Reeves, is caught selling a stolen projector, the police identifies the criminal, and connects him to other unsolved robberies. Using the witnesses of his heists, they draw their face, but the true identity of the smart and intelligent criminal is not disclosed. The perseverance of Sgt. Marty Brennan in his investigation gives a clue where he might live.

奥古斯特带领的三个骗子化装成传教士到处行骗，屡屡得手。一次他在街头偶遇自己天真烂漫的女儿，心里不禁有所顿悟，但却被人当场认出是骗子，并在女儿面前给人逮送到警局。出狱后的奥古斯特重操旧业，但在为筹集女儿学费的一次行骗中，他想独吞财物而被同伙痛殴，最终死在山崖边。

畅斯（彼得·塞勒斯 Peter Sellers饰），一位头脑简单的老园丁。他一直生活在华盛顿的一间老房子里，从未离开过。他全部的生活就是看电视，看电视成了他唯一与外界沟通的途径。在长期的累积之下，他的整个思想行为和世界观已完全电视化。然而他的雇主突然去世，畅斯一下子变得无处可去，孤苦无依。面对陌生而又新鲜的世界，他顿时乱了方寸。在一场突如其来的车祸后，畅斯居然成为富有的华盛顿商人伊芙（雪莉·麦克雷恩 Shirley MacLaine饰）和本（茂文·道格拉斯 Melvyn Douglas饰）的座上宾。他凭借在电视上学来的“广博”知识，技惊四座，甚至当上了政客们倚重的智囊。 　　本部享誉70年代末期影坛的政治讽刺喜剧《富贵逼人来》，是笑匠彼得·塞勒斯的最后遗作。本片荣获1980年第52届奥斯卡金像奖最佳男配角并获得最佳男主角提名，入围1980年第33届戛纳电影节主竞赛单元-金棕榈奖。

Sheila kills her husband at the start of the film with a smoking gun. We don't know how or why. All we know is men are banging on her door and she escapes. There is a notable dialogue as she makes her way to a New Years celebration with Richard Basehart as the poet William William. As she goes up the stairs to John Friday's apartment (her producer) she wishes she could relive the year and undo what she has done. William William, in an offhand remark, states he wishes he was the one who shot Barney, her erstwhile husband. We see that Destiny is not too happy with making changes to her plans