Some unknown maniac is threatening a navigation company to blow up one of its luxury transatlantics, the "Britannic", now in high sea with one thousand two hundred passengers. He is asking for a five hundred thousand pound sterling ransom, otherwise the seven bombs aboard will explode. An experienced anti-bomb squad is sent to the "Britannic", but although all the bombs are located, a very high skill level will be necessary to dismantle them. Perhaps that task is impossible. 　　译文(2): 一些不知名的疯子正威胁一家航运公司炸毁其豪华的横渡大西洋的“大不列颠号”，现在在公海上载有一千两百名乘客。他要求五十万英镑的赎金，否则船上的七枚炸弹就会爆炸。一个经验丰富的反炸弹小组被派往“大不列颠”，但是尽管所有的炸弹都被找到了，但是拆除它们需要非常高的技术水平。也许这个任务是不可能完成的。