Mothra vs. Godzilla (1964)

Original title: モスラ対ゴジラ

A massive Mach 3 moth! The heavy missile tank Godzilla! The sky, sea, and land quake in the fierce battle of the century!

Journalists Ichiro Sakai and Junko cover the wreckage of a typhoon when an enormous egg is found and claimed by greedy entrepreneurs. Mothra's fairies arrive and are aided by the journalists in a plea for its return. As their requests are denied, Godzilla arises near Nagoya and the people of Infant Island must decide if they are willing to answer Japan's own pleas for help.