在这部龙虎群英动作/惊悚/西部片中,1871年春天，日本大使在两名武士的保护下，乘火车穿越美国大陆，前往首都华盛顿，转交日本天皇赠给美国总统的一把价值连城的军刀。列车遭到了悍匪林克及其副手高什等人的抢劫，军刀也被抢去。高什为了独吞财宝，设计杀害林克。土匪离去后，日本大使救活了重伤的林克 并命令武士黑度十平和林克在七天内找回军刀。在林克和黑度共同战斗的七天中，他们惊讶地 发现，东方的武士道精神和美国西部的牛仔文化竟然如此殊途同归……。
The Japanese ambassador is traveling through the Wild West by train, when gangsters hold up the train, to rob a gold shipment. They also carry an ancient Japanese sword the ambassador was carrying as a present for the US president. The ambassador's bodyguard (Toshiro Mifune) will go after them, with the aid of one of the gang's leaders betrayed by his pals...
四星。
