A fisherman contends with an ocean-borne outbreak that threatens his seaside island community.

母亲（郑振瑶饰）和父亲真诚相爱，在法租界的上个世纪 20 年代建造的豪华富丽的别墅里过着优越的生活。文革使父亲蒙冤而死，也使这个贵族家庭的四个孩子从此走上了完全不同的生活道路。大哥良浩（赵有亮饰），家庭问题，大学毕业被送到西北，完全被生活的磨难改变了。二姐静雯（顾美华饰），高中毕业，被发配去了贵州农村插队。不幸的婚姻给她带来了巨大的痛苦。三弟阿荣（冯远征饰）从事着律师职业。但是，金钱的充裕并没有给他带来幸福的家庭生活，和妻子惠娟矛盾一直令他在体面的生活之外倍感烦躁。小妹（王祖贤饰），文革结束时，去了美国。但是根深蒂固的中国文化情结，始终让她有一份不安全感……

大学生理查德（克里斯托弗·里夫 饰）在毕业典礼上遇到了一个老妇人，老妇人送给他一只金表，并表示等他回来。虽然他感到非常奇怪，但事情也不了了之了。8年后他成为一个著名的剧本作家，他为了寻找灵感来到了一家酒店度假，酒店历史悠久，在历史陈列室内他被一张女明星Elise（简·西 摩尔 饰）的照片深深吸引住了，并认得她就是送金表的老妇人。原来老妇人在送于他金表的晚上已经离世了。而他通过梦境，回到时光倒流的70年前，发现自己竟与这名女明星拥有一段美丽的爱情故事。

Shipwreck survivors are found on Beiru Island (Infanto tô), which was previously used for atomic tests. The interior is amazingly free of radiation effects, and they believe that they were protected by a special juice that was given to them by the island's residents. A joint expedition of Rolisican and Japanese scientists explores Beiru and discovers many curious things, including two women only one foot (30 centimeters) high. Unscrupulous expedition leader Clark Nelson abducts the women and puts them in a vaudeville show. But their sweet singing contains a telepathic cry for help to Mothra, a gigantic moth that is worshiped as a deity by the island people. The giant monster heeds the call of the women and heads to Tokyo, wreaking destruction in its path.