Marshal Chris Adams turns down a friend's request to help stop the depredations of a gang of Mexican bandits. When his wife is killed by bank robbers and his friend is killed capturing the last thief, Chris feels obligated to take up his friend's cause and recruits a writer and five prisoners to destroy the desperadoes. 《豪勇七蛟龙》系列压轴最终篇章。小镇警长基斯决心不再沾染江湖事，与新婚妻子过着平凡安逸的生活，然而树却静而风不息，他妻子被先奸后杀弃尸荒野，迫使他再披甲上阵。当基斯路过一条小村落，赫然发现全村男人均被杀害，女人惨被集体轮奸，他的正义之心再度燃起。在追杀杀妻凶手的同时，他联同六个曾被他关进牢狱的昔日死敌组成七侠，一同抵抗墨西哥土匪头子狄多鲁。
