讲述英国本地发生银行劫案,苏格兰场无力破案就请来法国著名的大痴呆侦探克鲁索前来协助,而协警克鲁索也没动真格的去侦查什么的,反倒搞了很多么蛾子,捅娄子的同时也干掉了若干个坏蛋,之后莫名其妙捣毁了一个犯罪集团,收获一个靓女的真爱的同时也被一个老太太缠住了。Detective Inspector is borrowed from the Surete on special assignment for Scotland Yard in hopes that a fresh outlook will help the government recover the loot from the Great Train Robbery, which is being used to underwrite a new crime wave. What they don't count on, however, is having more than one Closeeau on the job.