Arms dealer Yolaf Peterson aims to make a sale to guerilla Mongo, but the money is locked in a bank safe, the combination known only to Professor Xantos, a prisoner of the Americans. Yolaf agrees to free Xantos, accompanied by reluctant guerilla Basco, but a former business partner of Yolaf's- John 'The Wooden Hand', has other ideas. 游击队员Mongo打算和军火商 Yolaf Peterson做笔交易，购买军备以对抗暴虐的军阀。于是他们决定合力去抢劫保险库，然而能够解锁的只有一个来自美国的囚徒Xantos，军火商 Yolaf 决定拉拢Xantos做这笔买卖，与此同时Yolaf Peterson的老搭 档“铁钩约翰”也掺和进来，要消灭他们以得到金库。
