The body of a young woman is discovered near a farm. The judge Larcher is in charge and thinks that the farmers (Rose and Pierre) have a link with the murder.

由马迪警督押送的嫌疑犯威高（吉昂•马利亚•沃隆特 Gian Maria Volonté 饰）从火车上逃跑，马迪马上联络总部在各处设置路障，并且出动警力大力搜捕威高。科里（阿兰•德龙 Alain Delon 饰）提前从监狱里被释放，当晚找到了昔日旧友里克敲诈得到了钱和枪，随后买了车离开此地。威高死里逃生巧合之下躲进了科里的后备箱里。科里经过路障检查时帮…