一個誠實的科學家把死去的百萬富翁(多諾萬飾)的大腦保存在水箱里。多諾萬成功地把他強大的意志強加給這位科學家，并利用他來謀殺他的敵人。

　　Shipwreck survivors are found on Beiru Island (Infanto t?), 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.

A couple of border town friends think waiting tables will fix everything, but they're mistaken.

　　經歷了上一集的風風雨雨，艾利克斯（林子祥 飾）和朱麗娥（鄭裕玲 飾）總算是兩情相悅走到了一起。他們決定在新年之后攜手步入婚禮的殿堂，然而，在此節骨眼上，艾利克斯被公司緊急召喚加班，兩人本來溫馨愉快的假期生活泡了湯。　　喬伊（張曼玉 飾）是艾利克斯的同事，兩人雙雙被派往巴黎出差。愛人不在身邊，這讓朱麗娥感到十分沒有安全感，再加上表哥（許紹雄 飾）的挑撥離間聽風就是雨，心態爆炸的朱麗娥決定也前往巴黎，看好自己的未婚夫。一連串的誤會讓朱麗娥和喬伊之間的關系跌破了冰點，她和艾利克斯的感情也因此產生了裂痕。