电影讲述的是一个普通的记帐员“Limpet(亨利·利佩特)”在美国卷入二战后决定报名参军,结果因为身体瘦弱而被拒绝,他沮丧之际落入水中,变成了一条会说话的鱼,之后他帮助盟军干扰德军的水下装备和武器,一举击败了德国纳粹、成为二战英雄一句话评论　　GLUB! The Face That Launched A Thousand Torpedoes!Now he takes his place with America"s greatest naval heroes! Theincredible story of Henry Limpet, America"s deadliest secret weapon! Nowyou will know all!　　will leave you limp with laughter!