趁姐姐不在，小姨子来袭

　　Five Spec Ops, Alpha Squad, head a simple Recon Mission that turns into an all out war for survival against a wave of undead experiments. Alpha Squad must fight, not just for the sake of their own survival, but the fate of the world.

　　中里博士は人間を透明にする薬品を密かに完成させるが、秘密をかぎつけた謎の男が薬を奪い透明人間になって、希代の宝石“アムールの涙”を強奪しようとする。円谷英二が大映京都撮影所で、「虹男」に続いて特撮を担当した話題作である。

　　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.